Best of luck on your journey, and remember that persistence and a willingness to learn are key to your success!

Your best bet is find a way to reject  them for someone better. 

Every question or discussion ends up being 30 agents spamming with "my market is best".

Welcome to BiggerPockets Rajesh and best of luck investing!

The anticipated rent per unit is $1,700-$1,900, annual rent 68,400I’ve been quoted a 7.125% rate on a 30-year fixed mortgage from a direct lender with no points w/ 5,4,3 prepayment. 

What are the Best Practices to Determine the names of Squatters in your Property?

It may be a little too late since you accepted the insurance money already, but typically you would have a contractor in place (Ideally multiple quotes) before accepting the amount quoted to you by insurance.If your insurance company referred you this company though then after doing more research on them maybe they are the best option?

AND, you don’t save a pro-rated portion of the taxes, any amount of your exchange over the ADU value would be 100% taxable. 

And what rent should I charge compared to a single family's market rate rent.

I feel like now the effective rate is much higher than 18% (closer to 30% +)  we agreed on… since they are taking 18% of the net total AND the cleaning fee sum.