Syndications don't get funded because investors think they are toxic. 

@Steven Nguyen            Your first step is to liquidate some of your Crypto so you have liquid funds to contribute to the deal.

If so you need to fall into the guidelines (for the investor whos funding it) regarding non arms length transactions.The most common scenarios they typically prohibit are:- Gifts of Equity- Bailouts- Leaseback OptionsAt the end of the day it needs to be a legitimate transaction, with legitimate funds coming into close.

When they do HML on OO, they want very low risk.  

Positive cash flow and low interest, i assume, long term loan is an enviable position that with time will produce larger cash flow.  

@Edgar Duarte Selling now under the primary residence exclusion avoids capital gains taxes, allowing you to reinvest the $500K equity in diversified assets like index funds or additional rental properties.

I own a 200 year old house that has a very low cost of repairs and maintenance over the 4 years I've owned it.

There are quite a number of things that can make utilizing an FHA loan more difficult such as more barriers during appraisal, appearance of low qualification/little cash, typically longer closing period, likely higher interest rate, and PMI cannot be dropped without a refinance if 3.5% down.That said, just chain 5% down conventional loans, and make sure your duplexes pay for themselves.  

Large deposits are nice, but very difficult to actually get access to escrow funds in the event of default.

Have you considered moving those funds into a self-directed IRA (SDIRA)?