If I could borrow at that and reinvest it at 18%+ then I would do that all day long. 

And they do now have an investment company for Mastery Students to both invest through and borrow from.

I am a private lender and I find borrowers through my profile on LinkedIn at REI meetings and networking at other events.

If you're flipping the HML route will work.If lenders consider cash on hand to repay a loan, they will want the cash as collateral, like in a CD and borrow on the CD, so that ties you up.

I think multifamily pricing takes on headwind when rates rise but that doesn't do you much good because your borrowing costs will be higher. 

"Low borrowing rates encourage speculation," he says.

Even if you don't qualify for what you'd hoped, a good lender should be able to help you figure out ways to make yourself a more appealing borrower.

In that case, I'd first find out how much he can borrow for a mortgage, and then decide if he wants a multifamily unit, duplex, single family, single family with a suites or a mix of the last three (depending on how much properties cost in the area). 

Of course, a lot will depend on the specifics of the deal and the strength of the borrowers.

@Steven Birch a small amount of banks qualify the LLC to purchase, usually they have to qualify the  borrowers.