But I forgot to mention the $50k liquid assets that are in crypto and stocks.

Problem is that your only remedy here is likely a suit for specific performance (costly and probably not likely to succeed) unless the contract contained a liquidated damages provision. 

Ideally all liabilities are extinguished, all assets are liquidated and distributed, and the LLC is dissolved with the state soon before the end of the tax period on a final return.If you intend to keep on DIYing 1065s, it might benefit you to be aware of these concepts.It's going to take a lot of your time to convince the IRS that you put a wrong tax period ending date on the return and get that corrected... 

-You have your comfort level of liquidity after paid off, as well as being comfortable with your amount of rentals and money in the market. 

Not only should you come out with better financing ( rate, costs and terms ) you will be in a better position should you ever be in a bind and need to liquidate.  

If the best deal is found, which loan option would best suit the amount of liquid cash?

A good approach might be to place most of your money in an index fund, which is quite liquid, while taking chunks out to "play with" and learn the RE game.

So it's extremely critical to liquidate all your assets, hold to a cash position, and then get ready to take down deals that will come to you via many people losing their homes in the near future.

My wife and I are planning on liquidating our current residence.

The reasonable response is what are your expectations regarding LTV, DSCR, liquidity etc?