"There should be a certain amount of peace with the relationship. Please don't expect bolts of lightening as an answer."
I agree with this, what type of answer are you expecting to hear from God? Burning brush type? LOL, won't happen. But I found it a very clear indication of God speaking to me when I found myself worrying to much about it, feeling uneasy, feeling "not at peace" as you are right now. I think that in itself is God giving you His insight, if he were the right one, you would feel at peace about it, but you don't. That's your signal.
As for not being a good provider, me personally? That would be an indication to not continue, but I'm biased as I was married to a non-provider, and know that even though everyone says "finances should never be an issue, it's love that matters", I smartly beg to differ and know the importance of financial security. I'm also a single parent, and though I don't pray for a husband or father for my children and am content being a single parent, if I knew I would "struggle" in marriage financially, I rather stay single and struggle
That's just me. If I don't feel strong financial security with somebody, or it's non-comittal, or not seen/happening in the now when you're dating, I don't put my hopes in the future or what will happen, or what they promise it will be later when married. Sorry. Not me. Financial and career security is important to me, it's not the biggest factor by any means but it is DEFINATELY on my top 5 list.
Someone who as an adult is financially stable, secure in his career, who is career oriented (not just works to make enough to scrape by in life and where work doesn't matter). I find for ME (and this by no means what everyone believes or is about) it is a desirable trait for a man to love and find pride in his job, in wanting to advance himself in his career in order to not only provide but find personal satisfaction. Not to confuse w/a workaholic, but someone who is serious about his life, his family AND his career. There IS such a thing as having different financial styles/goals/compatibility, and if you aren't on at least a similar page/goal then it can be disastrous. Have you guys discussed this in passing and not do in depth? There are questions you can ask to get what you need to know. Does he have some savings, does he believe in savings/investing/college savings/retirement savings/401K's/any other type of investing? Is he one to want to own his home or doesn't mind renting for however long, is he generous with you when you guys go out? Does he seem like an equal contributor now or at least aims to be or is just worried about barely getting by. In other words, is it a more financialy responsible type, or more financially bohemian if that makes sense?
Nobody should make you feel guilty for worrying about this, not everything that is important to you and me, is important to all, but you shouldn't toss it aside because others don't agree. If it's important to you, then stick with you gut, and apparently your gut is even giving you reason for pause now, I would listen to that. I listened to my gut about that (financial concerns) amongst many others when I was almost married to someone, there was a constant sense of discomfort, not at peace and worry that something wasn't right, or he wasn't the right one. Since I"m 32 and have lived many relationships, I know how God speaks to me, and that nagging doubt in the back of your head and your gut instinct is typically right on track with God's plan for you

There was too much in the air financially, job wise, church wise, home wise, finance wise that I didn't feel comfortable with that at that point in my life, and considering where he was in life (or in my mind where he should be). This doesn't mean they aren't wonderful people, with wonderful qualities, but if this is one of you worries then it's an important issue for you and you shoudln't compromise that, I'm sure there are people more suited for the more "bohemian" financial style that they would be compatible with. It would be miserable for BOTh people if they could not find middle ground as it would put strife in their relationship, it boils down to different styles/goals/priorities/life values, and neither one or the other is "right", it's whats right for each of us individually, does that make sense?
I would move on and keep praying for someone if that is what you really want, but don't settle for anyone/anything that is not what you need/want in a relationship TODAY just because you may think your options are limited as a single mom or you believe in a year, two years or four years things MIGHT be different

. It is what it is today. Don't feel guilty if this is how you feel and what is important to you, no matter what he or anybody might tell you (don' even know if anyone does say this to you or if this is even a doubt in your mind but felt to put it out there). Are you wanting to wait 2yrs and commit further in a relationship w/somebody who you don't even know will be able to provide and be on the same page as you with this matter? Why invest heart, emotions, and your daughters feelings and his in HOPES that it might change.
I know some will say, well it could change down the line, he could loose his job, he could have an accident, etc. but that is a silly argument, it's not wrong to have financial security as one of your preferences. If so, we'de criticize everyone for marrying anybody that matches ANY of their criteria, it's important to seek and go for what is important and valuable to us.
If that silly argument were valid, why would anybody choose ANY desired traits/characteristics in somebody else since obviously it could change at any given moment.
In your search, always consider someone of course who feels about Christ as you do, that goes w/out saying obviously.
God bless~~ How old is your daughter again?
I have two boys ages 6-7 who are my life, and I'm happy where God has me, content with single life. I've been div 3yrs now, and b4 my divorce, was pretty much a single parent from day one. It's actually not as bad as many think it is (at least for me it's not), but I keep that a secret

else the married moms sympathy might turn to envy lol j/k