There are DSCR based seconds available for investment properties, however the rate and fees are high. 

I'm assuming as long as rents are covered you just ride it out and diversify with a few properties per market?

Also, per their numbers they are buying for 37 mil, debt 24 mil, equity 20 mil, 44mil minus 37 price = 7 million in closing costs, which is 35% of the total equity, RE commissions of say 4% total 1.5 mil so they are taking 5.5 million in fees up front as well minus the inspections/loan fees etc.

Per OneKey MLS regarding sold Bushwick Condos in the last 6 months: Avg.

We would never allow this.What is your tax situation - I don't see anyway you end in a good situation by selling due to depreciation and payback and realtor fees, selling, closing fees etc unless you 1031 into something.

Additional prior to move-in fees: Admin Fee $150.

I also need to figure out how the cleaning fee works and other details like should their be a minimum night stay requirement.

This lists all income and expenses per category.

Current interest rates are going to make it difficult to reinvest into real estate and not come out of pocket more than $1000 annually, per your current situation.I am also assuming you are paying a property manager with your current figures. 

Here in FL, you can build out an ADU for under 3k in total fees.