There are several basic rules for a 1031 for identifying properties, timelines, and uses. 

However, I got caught up during creating my listing because it looked like I needed to have another account (Stripe?

Caveat Emptor is the rule of the day in these tax and foreclosure auctions.PS there is generally no do overs LOL

My father-in-law is also considering creating an HOA and selling each unit as a condo for $350k which would be $2.1M.

To determine the correct treatment, consider the RV's permanence, utility connections, and business use.This post does not create a CPA-Client relationship.

The 1% rule is an old metric.

Has anyone come across their property management company creating a "First right of refusal program" for maintenance requests? 

We decided to lower the price and hopefully that’ll create some traction. 

However, I have found trails of information on the internet and FHA-type websites indicating if you relocate due to work, that you are not bound by the 1-year rule once you begin at your new place of employment.

What ever you're doing to find/buy/create deals is working.