Different properties fulfill different purposes within the portfolio, so I can't say which one is best yet or at least until they are sold. 

I was going to reach out one last time and give him an ultimatum to fulfill the terms of the contract or provide me with a partial refund to hire someone else to remove them.

Each step will also have criteria that the previous step must fulfill in order to move forward. 

Not that selling real estate as a broker is a walk in the park but done right and you get established it can be a lifelong career and well paying with a lot of flexibility on your time.. especially now a days where its rare that agents work out of the office..  

My thought is they signed a contract and must fulfill it but this doesn't mean it will be painless. 

Once they fulfill that first step according to the offer, meaning signing it and returning it to you in the required amount of time, then you and the seller have a binding contract. 

Maybe that person refers someone my way, maybe they are a resource for someone else in my network, or maybe they just become a lifelong friend.

I requested a Redemption of my funds from fundrise back in January and they won't release them.Here is what they said:Fundrise Advisors, in our capacity as Manager of the eREITs and eFunds, has determined that it is necessary at this time to suspend the processing and fulfillment of redemption requests.While under normal market conditions, we seek to provide investors with the ability to redeem their investments on a regular basis, during times of financial crisis or extreme uncertainty, it is absolutely critical that we suspend redemptions in order to protect the interests of all our investors.As Manager, we have an obligation to make decisions based upon what is best for the entire Fundrise investor community and must always put the priorities of the whole above any one individual.Fundamentally, Fundrise investors own real property, which is simply not liquid. 

But perhaps its more fulfilling to have a system of making x amounts of offers per year.

I would reach out to the cities EDC board to find out what is needed and fulfill that need, once you have identified where you add the value you can create a program for your investors.