I would definitely check out the ROCOR church (though as a ROCOR deacon, I might be slightly biased...). Sometimes the ROCOR church in an area is the least ethnic and can even be entirely in English. Sometimes it is less strict than another church. Sometimes the people are friendlier. ROCOR churches will usually insist on weekly confession if you are communing weekly, though as my priest puts it if you bathe regularly, baths go more quickly and easily. ROCOR churches will usually ask that women cover their heads (although many of them will only insist on that when approaching the chalice). My parish only really uses Slavonic when something is repeated so that people hear it in both languages, the people are very warm and welcoming, and our priest has very good pastoral sense. Every parish is different, but having been in a ROCOR parish now for about 6 years, I would say don't shy away from at least checking it out. It could be the best parish ever!
I think the part I'm most concerned about is the amount of Slavonic, as this sounds like Divine Liturgy has a significant amount of that. I don't have so much difficulty for myself, as I do know the services, but I am not sure how easy it will be for young children to pick up the meaning of the various parts of the liturgy when it is spoken in Slavonic.
The website does say that the vigil is primarily English, but that Divine Liturgy is a combination. I'm a pretty big proponent of liturgy being primarily in the vernacular, not in another language. I can't say for sure how much is in Slavonic though. We need to come some Sunday to experience it ourselves.
My husband doesn't have as much difficulty for himself, as his family is Slavonic and grew up in a Carpatho-Rusyn parish, primarily comprised of an Slavic emigrant community. He grew up hearing the Divine Liturgy in Slavonic - though his family eventually moved to a parish that used English instead (for the sake of the kids). If we do go there, I will be studying up on Church Slavonic, as I really want to understand all parts of the service! I'm glad my first parish as a convert uses English though. It'd be harder learning about Orthodoxy if the services were in another language.
The website does say that all women and girls 9 years and older must wear headcoverings. While I like that my current parish encourages it, but doesn't require it - I personally wear a head covering often, so that is an easy switch for me. Most of the time at my current parish, girls younger than teenagers don't wear headcoverings.
Another big change will be weekly vigils instead of vespers! And of course, weekly Confession is a change - but probably a good change. I hope there will be a choir as well

I am glad the music and chants are similar.
Your parish sounds like a great community! I'm glad to hear about your experience.

I haven't talked to many from ROCOR parishes, as there aren't any currently near me.
If we do move there, I'm guessing it definitely would be the ROCOR church, if for no other reason that the next church is twice as far (over an hour vs a bit over 30 minutes), but I definitely would like a good community of faithful Orthodox Christians. That is the most important for us. Raising our family in a strong Orthodox community will be critical, and is an important part of our decision for where we live!