I would look at experience, closing turn times, and fees to compare. You are right FHA is pretty much the same as far as requirements however, the service is something that I would check out. You can put a request here on Zillow
Your interest rate is what you pay on monthly. The APR is what the cost of the loan is in a percentage - it has nothing to do with how you figure your monthly payment
Definitely do your homework. Cheaper isn't always better. Find out who is going to be there for you during the process and compare your good faith estimates.
Why is the owner's estimate so ridiculously high? Is he high?
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