Balance of current loan with private lender is about $470k.pro forma (and actual cash flow) runs about $1200 net each month.Property is owned by an LLC of which we are the two members.Last week I got a quote from a company for a DSCR loan for 9.25%. 

We went forward buying houses in our own names until the point where our DTI got out of balance, and where the reserve requirement was higher than the next down payment. 

This is part of achieving highest total return.good luck

Considering the investment size and projected returns, how should I structure my financial involvement to balance the potential risks and rewards?

The Disney market is oversupplied with condos, making it challenging to achieve strong rates during a typical market.

Here’s how you can simplify the process and achieve your goals, while also exploring financing options that could benefit both Cousin A and Cousin B.Tenants in Common Agreement: While Cousin A and Cousin B will technically need to report rental income and expenses according to their ownership shares, a well-structured Tenants in Common (TIC) agreement can outline how they handle income and expenses.

We've seen a very strong uptick in interest for small balance multi family properties and how to secure financing for them.

While I am not in a position to buy positions, I believe on your listing thread, it would be very helpful to share at least purchase price, current T12 NOI, and loan balance for both portfolios you are looking to sell. 

There's a balance between what's good for the seller and what works for the buyer.If the buyer can't afford the payments, they've been set up to fail.

Balance is $79k at 7%.