Don't over complicate it, keep it simple, reverse engineer it into it's pieces.

To address this, we agreed that I would work in the business for six months to verify the financials, which so far align with his POS system.My main issue is that at 23, I don't have strong financials to get a conventional loan at 75% LTV with a ~7% rate, and the seller's lack of financials complicates bank approval.

Fortunately there are lots of good resources.This business isn’t particular complicated, but when you don’t know it, it’s hard to know where to start.

The legal and compliance side of a fund is much more complicated than a single syndication deal.

Or is it more complicated than that?

The US is one of the few places where even foreign nationals can purchase real estate without too many complications. 

That is not an issue.the question is how to coordinate the two sales and one purchase. if it’s too complicated, may just pay the capital gain tax.Quote from @Bill B.: You lost all hope at step 1.

Seems very technical and complicated.

This can work well for an individual investor, but can get quite complicated for a partnership. 

The intrinsic complications of a contract should be overlooked by a professional.