I would say you could allow the tenant to put in a window AC themselves but I wouldn't do it for them unless there was a major problem with the central system that you were unable or unwilling to fix.

Also, if your agent is unwilling to do as you ask then find another IMO.I have a business model and it only works if I follow the business model. 

The inspection was done about a week after move in and the list of required repairs was pretty extensive; to the point where the property needs to be vacant to complete some of the repairs.Since receiving the list I've tried to get the tenants to move out terms but they are unwilling to agree to what I've offered so far (deposit and all rent paid back plus $500 for moving expenses).

If they are unwilling or incapable of doing this you should be concerned.

Remember your goal is to sell your house and if you would be unable to or unwilling to make changes you might have then offered to drop the price in exchange for a commitment to buy your house.

I am unwilling to gamble 20 years of slow and steady building for a shot at a quick profit. 

Why ask for help and opinions if you are unwilling to listen?

On the other hand, I am unwilling to cough up for an accountant until I prove out that this REI thing is going to work for me long-term.

If an unlicensed person brings me a buyer for my PA in a wholesale deal ,I can pay them a referral under their BIN or EIN.However, If a licensed agent requests commission for bringing a buyer to a deal where an agent is already assigned in contract, and we are unwilling to negotiate commission, how can I legally pay her a referral fee for bringing in a buyer?

And there is no better tool for both investor and contractor to track labor, and learn and fine tune estimating skills.Generally speaking, a contractor who is unwilling to provide a detailed scope and schedule, isnt confident in his ability to either draft them accurately or meet their dictates.