The main reason is ND is that it is easier to get property back and I get to depreciate asset as L/O.

A lot of folks are starting funds now to do multiple deals, that may be worth considering for your situation, rather than single asset syndications.

We feel this is the right amount to protect our assets in the worst case scenario.

Buy an A class asset in a great area with all the major CapEx components taken care of.

Since you didn't mention it, I'd also recommend you do a criminal background check with a signed (real or digitally) application that gives you permission to do so.

And you have to own assets to achieve that.

We are lucky to have pretty good equity positions in our 4plex and primary, 1 of 2 VA loans available, and a fairly diverse set of retirement supports (3 years from drawing military pension, mutual funds/TSP/ROTH  savings, and our 4plex).The problems I am trying to solve: I need some help to figure out a long term financing strategy to maximize the assets I have to buy more MF properties over the next 3-5 years while I have my W2 income.

And in whatever asset class you want (managed or not and in your new backyard or not). 

This way you still control the asset for the long term, and you can take advantage of the current low interest rates. 

Upon the qualification process, does any mortgage company consider cryptocurrency balance as assets in the qualification process?