With that said, I'm not sure what document or form the parties would need to fill out or would it be something an attorney would draft up and then make sure it's filed so it's not missed during title search UNLESS maybe the closing company someone is using while selling the house has a document drafted up with that closing company whereby "internally" the current owner/seller agrees to gives the wholesaler X% ownership, which then would have to be filed with the county to make it official, and then continue on with the sale of the property and then both parties would have to sign the deed as owners.The scary part for the seller would be "what if the sale doesn't go through, now this person owns some of my house forever".   

I tried seeing if the PM was willing to modify this clause and checked to see if it was missing "not" and the answer to both was no! 

I don't see anything wrong with your strategy, I know a girl in my area who does BRRR(R) [you missed an R] very successfully.

But considering it does, any reason I would want to miss my 3.5% down payment?

I think you are missing the most critical cost upper. 

I know the East Asian furnished-home-feature desirability checklist (shoe storage at entrance, good rice cooker, good cooktop, exterior venting extraction hood), but is there something I'm missing for a South Asian audience? 

I missed that.I prefer MM leases after 1 year.   

Maybe a workbook with property analysis, Underwriting best practices, checklists so I do not miss anything. any suggestions would be a great help.   

Also as mentioned earlier, the down payment is not mine and will be paid back at 0% interest so I'm slightly confused if cash on cash return plays a big factor in this deal since once they're paid back, I won't have any cash in the building.Thank you so much for any insight and help with anything I may have missed!

I will miss Doc's drive in.