@Joshua Goston its kind of hard to answer your question without knowing what kind of deal you're looking to put together, as structure differs depending on the deal.

See what kind of person they put in your house... or even try and use it as a negotiating tool to see if they will lower their vig.

And the second family, although they also have low credit scores, the score is based on the fact they don't use credit they do have some collections but the debit amounts are very low.What kind of CMA work do I need to do before I deny the first family? 

I'm pretty sure every major city and MSA has at least one attorney who does that kind of work exclusively.

Or experience getting something rezoned or some kind of exclusion or exception to the zoning?

I'm not sure if I want to pursue a FHA 203k loan or some other kind of mortgage loan.

All this depends on what kind of rent property of course.

What kind of rental income do other units similar to this one generate?

Outside of that it's your building and as long as you aren't discriminating against any protected classes you kind of run the show.

I have excellent credit, not much debt besides my residence, not sure this matters, but it make me feel good :). lolI am curious what hard money lenders y'all have used and what kind if deals are out there.