Selling your properties on owner carries stretches out your tax bill.  

In other words, don’t stretch yourself too thin on money.What else would you add to this list?

If he is that much of a headache - and it seems he is going to continue with his abusiveness and continue giving you problems - it seems like it would be worth it to let him leave if he wants to so that you can get a better tenant in his place- the mental and physical toll this tenant will place on you does not seem worth keeping him around and then trying to "punish" him for resolving your problem by leaving  seems like it would only stretch out the inevitable.

Could you possibly get the owner to sign a contract similar to a wholesale contract but you stretch the terms to 6 months....

I know I am REALLY stretching the scenarios way out there, but this is the time for me to get it right while we are still in the development stage.

I agree with @ScottSwink, I think you are stretched thin.

Those promoting wholesaling are stretching.

You’re in the final stretch here so try your best to be a little more patient

I like the idea of it, but I feel like I can stretch my money further with active investing since I don't have that much to spare. 

That might be more like 120-140k though if you can stretch a bit higher.