I have some rentals and have done some rehabs, and work full time in commercial construction management, so I know this is what I want to do.

I have heard many horror stories of a guest complaining and getting a full refund at the hosts expense. 

I have several templates and resources to structure creative financing deals with sellers and have a passion for doing so.

Since you are selling your business, are you looking to go into full time investing?

My wife and I work full time jobs, so dealing with tenants is a low priority. 

Call note due demanding payment in full within ___ days for breach of contract etc etc. 

The old one might be worth $5 at the scrap yard - if you have a truck, that's probably not enough money to take it there by yourself, but if you have a place to keep the old one until you have a truck full, then it might make sense.I hope this helps!

I have a loan agreement with the LLC  that outlines repayment structure and interest.  

Raise that limit if needed)Other structures  (for detached garages, sheds, etc...)Liability   (Maximize this coverage. 

Due to the amount of liquidity you have, it's hard to recommend the SBL loan (or any additional leverage) without knowing your full financial picture since it does seem very risky.Now if you truly do have a home run deal in the works and it would cash flow and work with DSCR rates and terms (which I believe are only a couple points above most margin rates or conventional loan rates now), I would say that might be an option to consider.