But... you made so many mistakes:(1) No Personal Guarantee: try getting a loan of credit card for an LLC.

They already scraped and painted it but management tried to charge $250 for doing so, which i argued stating the cause of the damage was the lack of ventilation.

Separate bank account, credit cards, signature blocks for every contract and document you are signing for LLC. 

On the forth month I did get the four months in one lump payment which felt great, but really was just refilling my account or paying off my credit card which was stressful.

If the tenant is making the situation worse by not allowing the repair to be made then you should charge them for the repair. 3.

I have spent countless hours trying to figure out how to buy properties with no income, no down payment, and a 700+ credit score from a student credit card with $10 payments on time.

Also in regards to outstanding mortgage, most of these will be charged off by the bank as bad debt if they have not reported it as a foreclosure.

You could charge a higher interest rate and negotiate the down payment that way you still get your money monthly & not worry about repairs etc. if the buyer defaults, you get the property back.

Typically flooring guys charge a flat install per square foot and then more for stairs.

In other words, if you find a tenant who starts renting on November 20th, then you can charge the original tenant for 20 days of rent and refund the remainder.