Next week I have about 15 hours of work for that business and then I'm done for good.My third closing happened 4 months later in April and I'm in escrow for my fourth to close in June.  

I'm looking forward to providing me with a third income.

My first choice was quit claiming the property then I perform needed repairs.

This property still cash-flows but definitely under performs (due to flood insurance in my opinion) compared to the others.

You probably need to find a separate, third party, Qualified Intermediary to hold the funds for the 1031.https://firstexchange.com/attorneys-as-closing-agents

I recently purchased a 9 unit residential apartment building, the city sent out a third party assessor to evaluate the property for property tax purposes.

@Hen Ley Hello.There are many portfolio/commercial lenders out there that will provide loans based on the performance of the property.

Second (and third and fourth) lienholders will be a part of the negotiation process.

We’d be selling to a third partner, who would then own 93% of the LLC.Can anyone explain or suggest a reading list to learn about the applicable tax law?

A good contract will impose performance standards that will protect you in that regard.