The way you are breaking it down is very spreadsheet-friendly in terms of what would work in a best-case scenario, but landlording for five room hackers is not easy and the rent is not easy to collect in all cases.

You will need to help them cross back into normal society, its not a situation where you sit back and collect the rent.  

Also, focus on 2 years of job/income stability.Class D Properties:Cashflow vs Appreciation: Typically, all cashflow with little, maybe even negative, relative rent & value appreciationVacancy Est: 20%+ should be used to cover nonpayment, evictions & damages.Tenant Pool: majority will have FICO scores under 560 (almost 30% probability of default), little to no good tradelines, lots of collections & chargeoffs, recent evictions.

I've used Stessa with my own rental properties and I recommend it to my clients, and I think it's one of the best ways for rental property owners to track their income/expenses, collect rent, etc. 

I feel my largest use will be online rent collection as well as tenant screening.

That way, you're getting paid without having to interact directly with the tenants, screen them, collect rent, drama, etc.

The LLC would collect rental payments in a business account and make the monthly payments on the mortgage operating like it should.

Gross revenue is all income except taxes collected. 

Do you have collected any certified letters of tax notices sent by the local tax collector?

Should I be paying sales tax to sub contractors as owner builder, so use reseller certificate and then collect tax from ME.