I have remodeled the unit completely prior to putting it to rent, including addressing pre-movein readiness checklist I was given by RL after they walked through the unit (small list of punch items like toilet paper holder, cleaning unit, door stopper etc.).

No list no set of characteristics and predict motivation because motivation is based on emotion, NOT DATA.If you were a lion in the dry savannah of Africa and you wanted food.

If I understand you correctly, they can't even access their food or clothing, so this will be a big impact on them for a period of time.

The only food I have delivered is pizza, and even that is rare.

Andrew, honestly just keep going.You'll be worth 8 figures soon.Not many people love their jobs, but it puts food on the table and you are clearly good at it if you've been doing it so long.Use some extra income to start getting into RE investing.If you get a seller to carry 15% in 2nd position, you just need a 10% down payment.Its tough to do but everything in life takes sacrifice.

Residents can pay $1600 for rent and be in nicer areas of Memphis with better food, school, job, and transportation options. 

Another issue is the gas station includes a liquor store so opening a new company to buy out business would mean losing the age of liquor license which may be beneficial in the future if they pass a law on permitting more liquor licenses to existing holders. 

However, some might work with you if the second lien holder agrees to subordinate, meaning they stay in second place after your new loan is funded. 

Where will they get money for food and other necessities once HELOC is depleted?

Just a short list its like 50 ways to leave your lover there are 50 gothcas in sub to. 1. the easiest for everyone to understand the sub to violated the Alienation clause in the mortgage or deed of trust and holder of the mortgage DT / Note decides to call the note due and payable and starts a foreclosure. 2. foreclosure started and the person who bought sub to has no means to pay it off or refinance it and the original sellers credit get trashed and if its a deficiency judgement state even on an owner occ like Texas lender sues original seller for the deficiency. 3. this kind of investing or acquiring assets tends to attract those with limited resources so they have no ability to fix things they decide to scale up and then it goes out of control and sellers are really harmed4. deal goes south and original seller sues or files complaint with AG. 5.