You could even go a step further when generating the contract and create monetary incentives for hitting milestone dates (i.e. $300 bonus if roofing is done before July 1)

But I now have the following things that I cannot even put a monetary value as a result of doing it:A good and reliable contractor who is ready to help me grow my business and work on future projects.An electrician, who I met AS A RESULT of the my contractor.A great handyman and gardener, who I met, AS A RESULT of my tenants.A fairly thorough working knowledge of how to replace a roof, run plumbing, electrical, hang drywall, lay tile, and the overall costs associated with the replacement and repair of all these things.

While they don’t have monetary skin in the game they have time.

This will not however make up for the substantial monetary loss bound to happen down the line.

You'll essentially be a holdover tenant if you don't leave on the previously agreed upon date, so the reality is you could get into legal trouble because they could pursue an eviction and other monetary damages against you.

Doesn't necessarily need to be something monetary but even the possibility of hiring them for your properties could be value.After a couple times of doing these, you'll have a better understanding of the process... but there will still be variables (labor, materials, your exit strategy also carries weight as well, whether you're going to fix-and-flip to a retail buyer or rent it out.)

We also have a construction manager who will be providing GC services free of charge for the actual rehab part of the job (our monetary investment to fund all construction costs, he will be providing general labor and management).

There is a monetary value to that time.

However, since it was not purchased as a rental in 2005, it doesn't make monetary investment sense. 

I need to figure out a way to go after the cosigner who has the money to pay.This has been covered already.Hire an attorney, join the ex-spouse as a party to the suit, add claims that will result in a monetary award.