Alternatively you can do the LOC (line of credit) on it so you can retain the home but are definitely subject to today's current rate environment.

I would say credit monitoring

Keep your payment at no more than 35% of your income and minimize your credit card and auto debt.  

We both have good credit but my lender made it seem like there was no getting around putting less than 25% down on an investment property.

This jumps out to me as lowest risk, greatest scalability in shortest time, making it most viable to achieve the kind of income sought. 

The sub 550 credit score people come out of the woodwork to apply for this home. 

@Stefano Vrolijk it all depends on your credit history, whether you have an SSN/ ITIN and how much you can put down.

In some cases, federal tax credits like those for low-income housing or economic development might also apply if the project aligns with certain goals.Instead of buying the land outright, developers often lease it from the tribe, which can reduce upfront costs and sometimes come with favorable lease terms.

Once you start processing the credit/criminal, the money is spent, and you can't get it back.

Developers will not be able to get these bonus building permits without providing such TDR credits.