So essentially if 75% of my rent covers more than my mortgage (which it does and should) then my debt to income will be lower according to lender's standards. 

She mentioned that, from a tax standpoint, if  I don't have partners on the properties that I pick up, I could essentially hold them personally.

You are essentially doing this with a duplex, and I see no reason not to do it again if you can find the right unit.

The voucher holder will provide you with the paperwork you need to fill out once an agreement to rent has been made.  

The town of Mariposa is essentially the gateway to Yosemite valley.

MikeWhat does the seller finance deal paper work say? 

Local and state compliance issues are a pain and I would ask potential professionals if they can help with city business licenses, county fictitious names & property or regional taxes, state board sales taxes, secretary of state entity issues, etc. that all require filings, paperwork, payments, etc.  

If your business isn't too complicated, the rest of the paperwork including the OA, EIN, bank accounts... can be created in 2-3 weeks.

So essentially you're going to pay tens of thousands of dollars for someone to quell your fears about REI.

(note: I only monitored the progress of these roof repairs, never was involved in the paperwork or process through the insurance company)What do you think I should do; wait to get estimates from local roofing companies, or call insurance to file a claim first?