In your shoes, it might be simpler to stay focused on grad school and use your cash to lend to other investors or take an LP role. 

So, with no foundational knowledge of real property, and no capital, his only alternatives are (1) “bluff” the homeowner into thinking he has the money and intent to close the purchase himself and or convince the homeowner he has an extensive list of cash ready interested buyers (“partners”) with whom he’s done dozens of prior deals or (2) pack up shop, write off the money invested in mentoring to a worthless investment, and decide IF real estate is right for home.  

Cash flow needle in the haystack!

@Ryan Biankowski That amount of money in cash could serve as the down payment on a potential flip.

Will be paid in cash.

They also allow improvements (with documented evidence) to the property to be backed off the sales price for basis.If you do not need the money and don't mind the cash flow, consider owner finance and carry it out for years.  

Or do they care more about the consistent cash flow or possibly upside when selling the property?

If you do, keep in mind that selling, without paying off the mortgage, violates the due on sale clause.That means if your lender finds out, they can make you pay the remaining amount of your loan if they want to or they can take you to foreclosure.

I paid $307k cash and spent another 30k + to fix it.

You want to show the credit bureaus that you're using your line(s) of credit but you also want to limit the amount of interest you're paying.