Since living here I’ve put in a new HVAC in both units and kitchen into one unit, I’ve max out my credit card, and have had my parents help me.

You are becoming distracted and diverting your time, energy and resources away from where it should be spent which is locating and acquiring good real estate and then managing it well. 

-- We put in our ads that mechanicals will be installed for inspection and/or for MoveIn.Boards are useless!

If I didn't put in an offer they would fight over it.

However, when I put in my address, rather than taking the houses listed near me, it is pulling houses in that higher priced area (even though there are tons of houses listed near me).So with that said, I am considering an airdna membership.Thoughts? 

Definitely looking to start smaller, in the 2-4 unit range, but seeing what you put in your buy box helps me think about narrowing mine.Plan is for funds to primarily come from saving from my W-2 work and possibly utilizing equity from my primary residence, though that is something I would need to really plan out.  

Many jurisdictions will not record a subdivision plat until you've put in (or bonded) the infrastructure (power, sewer, water, roads, etc). 

Lawyers, police, emotional stress, your name associated with a shooting, stigma on your building, opportunity cost by being distracted, possible jail time... none of that is good for business.

If we approached him with the $5,000 and had the deed put in our name, could we pay off the mortgage and own the property?

You bought this for 720k, then put in 463k, and are selling it at a huge loss for 751k?