Then you may be subject to the eviction moratorium, but then again you may not. 

Otherwise with no income you are looking into just buying all cash or using a loan called Debt to ratio income to purchase investment properties where you use the rent to cover your mortgage but you will need to put down at least 25% down of the purchase price.

ya absolutely. most people just recommend multi family because it allows you to offset your income while living there without having roommates. also they tend to cash flow better so if the plan is to do this year over year making sure the rents cover your DTI when you move out is very important.

A solid understanding of the rules can open up opportunities you didn’t even know existed.House hacking can be a powerful strategy to build wealth while covering your living expenses, and incorporating advanced strategies like 1031 exchanges can help you scale faster.

You must however make enough to cover the note on 2 properties because there will be times when the rental is not occupied2.

If you don't, the next seller (ie the person buying your flip) will have an inspection done and then ask for $ to cover a new septic. 

Since you've already covered three treatments, you could offer a good-faith rent concession (e.g., a one-time reduction) without admitting fault, which might maintain a positive relationship with the tenants while protecting your interests.

Right now just paying rent and heat on an empty house ..On the STR subject have you ever heard of “ Evolve “ for short term  rental property management ?

The room functioned and it isn't like they couldn't put a trash can in front of it to cover it up. 

The seller will act as lender 2 and give a loan for $40,000 to cover acquisition and closing costs.