I would agree up to here. He wants you to put Him first in everything. If you do not, then He will not forgive, or offer any type of grace AT ALL. But how do you know there exists an agent there to actually love you back?.?.?.?.?.?.?.?.?...................???????????
The rest below, can be most/all grace alone. Let's again use your "dental analogy"...
You have eight missing teeth, 5 deep cavities, and inflamed gums. His grace acts as the 'repair' for all the areas He deems 'imperfect'.
Another, whom also loves God, may only have two cavities. The dentist needs to provide much less repair/grace for this person to make a 'perfect dental outcome'.
Hence, your rotten mouth, verses your neighbor's 'better' mouth, then become arbitrary. God is already offering His grace to make you both 'whole', since you both love Him. The only REQUIREMENT of you both is to pledge complete allegiance/love to him. I doubt your dentist requires this however...
The second Commandment is not a requirement, as grace acts as the dental repair(s) here.
All people will do some 'good', and some 'bad', whether you are a believer or not.
I'm continuing to notice it's the only one required, for which there exists no room for any grace - as a substitute.
I doubt this is the case, however. This means you love your enemies, or the vagrant in the street, more than you love yourself. Do you really? I somehow doubt this....
But regardless, it does not matter. Under the concept of grace, all is pardoned.
The rest of your response below is going off tangent....