I attended the meeting and they do have a program geared toward investors.

I observed no standing water in the drain field of other signs of distress.

So I stand by my point of the risk being reduced with more units.

There are a couple things that stand out in your spreadsheet.  

I'm not sure about your local Coldwell Banker in MN but ours here has a part-time agent program with discounted desk fees and training geared toward part-timers. 

I can't stand knowing I'm doing business with a liar.

I've got rentals and enjoy wholesaling although my intentions are geared towards larger multi units and or mobile home parks in the near future.

One thing that stands out from looking at your numbers, your monthly expenses seems low, although I don't know the exact neighborhood you're in.

I asked him if Mr B knows about this deal and Mr B does not which obviously concerns me but I can understand where MR A is coming from because he stands to lose all he has paid into the contract and then Mr B has just made 1 years worth of profit and can start the land contract all over with another buyer. 

Switching gears and thinking a low cost SFH may get a no money down deal??