This is tough.Depends on how fuzzy you want the business/family line to be.The only thing I'd be absolutely sure of is that your money has more tangible security than being a "personal loan" EVEN IF you cut him a break on cost. 

Maybe some extra money owed on taxes?

The gurus tell you that you can do anything with nearly no money at all.

He seemed willing to do whatever to get the unit, putting up all the money for a year and extra security deposit, but he did sound a little "car salesman" so that didn't work in his favor.  

Wall Street often doesn't highlight these options because they make money from the fees on traditional investments, but with a Self-Directed IRA or Self-Directed 401(k), people can take control of your retirement savings and invest directly into real assets if they wish.Here’s how it works:1.

No offense, but you want to act like a company or business to make money, but you don't want to take responsibility like a company or business.

I know the consensus is "The best market is the one you're already in"  but I'm just curious.If you could start over anywhere with a decent chunk of money and a solid house hacking strategy, where would you choose?

I never applied for a Unit that big and was wondering if I should try to get a loan (even though I don't get much income right now). and if how what is the process, is there a way to get the loan without putting money down, etc. the only reason I am asking this is I have no experience in this and it practically me jumping from one house to a 14-unit and am trying to figure out if this is a right move. 

The structure has been we are loaned the money at 0% but the lender is getting a big chunk of equity.

All work, no pay.If you want to make money, stop trying to chase get-rich-quick schemes or working with shady businesses.