Since it sounds like most of the debt on the properties are not even on-title (business lines of credit), you'll have access to the most funds as a lump-sum this way through one transaction as opposed to individually refinancing them. 

The details:STR owners must obtain a $119 STR license.Can operate one STR in any legal dwelling unitR-1 properties can do one STRR-2 properties can do up to two STRsR-4 properties can operate up to four STRsThis does mean that if you have a single-family home, zoned R-1, you can NOT operate multiple Airbnb room rentals.

True, I'd avoided bad consumer debt, worked on my 401K, and did some saving, but I never started building a snowball toward wealth and freedom from a cubicle.

@Will Kaufmann i was just about to say this would be a better question for an attorney but you are the attorney :)I'm an investor and Realtor for the reference..Not giving any legal advice, but from a stand point of a relator, it would be unethical to go behind your back and pitch the property to other buyer if they are your agent and you are interested in the property. 

Advantages of paying of the loan: you have a smaller debt on your balance sheet.

The original buyer could claim they have a legal contract even though they did not close on time.

So I'd still 1031 that to avoid tax but put it into something debt free that simply produces net predictable cash. 

So, if you did 50/50, you would split the monthly profits (cash flow after operating expenses and debt service) and the proceeds at sale. 

Military Deployment Orders / PCS:The Servicemembers Civil Relief Act (SCRA)is a law that is intended to help protect the legal rights of members called to active duty.

You have aggressively dropped down your student debt, I say continue the progress and pay it off for you can potentially buy a bigger home (4 fam) owner occupied once you are done.Or if you are comfortable with debt you can make a bigger return investing and that can help you pay down your debt. if you are I will get a owner occupied 2-4 family with a seller concession (depending how competitive your area is) for you won't have a high closing cost.