You might have to deal with him on a different level, especially at first.  

You've grown your business to 10 or 20 houses and it's time to take your business to the next level...What are the options of scaling your SFR investment business?

Much of both Dodd-Frank and the Safe Act was written at a 50,000 ft level, with interpretation and implementation pushed off on states.My advice, if you're serious about pursuing owner financing, is to find a good RMLO to handle your buyer intake & qualification and the servicing of your loans.  

This is not a good deal on really any level. 

My wife and I have invested in relatively low end townhouses in MoCo, however we are finding it challenging to find multi-family in that area or any place close to DC within our price range/level of risk.Either we've felt uncomfortable with the expense of the multi-family properties or (perhaps incorrectly) equated the higher priced properties as a tradeoff of low cash flow and possibly higher appreciation (due to increasing rents) vs higher current cash flow and lower appreciation in the more remote areas.

Having the rent for an area you're not investing in won't help you much, frankly, since there's different factors that come into play to affect rent levels.

An investor will need to know the risk level.  

Even at a contractor level, I wont compile a material list of all of it.

I did this program at the lowest level.

Expensive and may not be worth it: Level it with self-leveling compound.