Hi I am no expert but I have been looking at Boston area for ~9 months now.

Your tax burdon will be less if you can keep them for 12 months and a day, maybe a rent to own scnerio?

We are celebrating 35 years and have meetings all over Orlando throughout the month.

Look into DSCR (Debt Service Coverage Ratio) loans that might have more flexible income requirements?

The jailed brother makes the most income, and I assume the other two would have a hard time covering the rent each month. 

Also, you can get referral credits that can make the premium free for months! 

In fact, given the success I had on my first commercial deal (bought, rehabbed and flipped an 18000 ft light industrial building and netted $500K in 24 months), I'm not even sure I want to do residential going forward. 

I will say I think the average is closer to 20% of gross revenue. across the board for this type of service.

This would depend on the location, I know in Texas the RV parks are generating $300/space/month in income, you are easily seeing 30% ROI for RV parks.

But how do you know what to take out every month from the bank account once the rent checks are deposited?