Consider looking into FHA or conventional loans with lower down payments to maximize your cash.

The plan is not clear, but hopefully there will be payments directly to landlords. 

. -- Thus, you can expect to get Class C or D tenants, which have a 15-25% probability of defaulting on their lease payments.2) If your PMC is lowering FICO to 550, what are they doing to improve their screening in other areas?

In a Subject To, it isn't the seller making the payments.

These payment options can get up there!

You can live in one unit and rent out the other for little to no down payment.

True re the prior poster, re this helping the seller save their credit, if you buy sub-to you will dramatically raise their FICO since the mortgage will show on-time payments.  

Wondering if you have advice on me just being the bank, where I purchase a house and structure a rent to own with him and have him build up a 30% cash down payment and some equity and then me sell the house to him at a locked in price.  

so those owners are pretty comfortable - no mortgage payment - and they don't need to sell, and they don't care where an investor "needs" the price to be to make money. 

Any other expenses are using up funds that would otherwise be sitting in your checking account to make a mortgage payment with.