Chris, I think you should keep your boat and run her as is. You clearly enjoy using her and if the DDs are running okay, why repower her now? If you take care of them they will last a long time, and for what you would spend to repower her and all the "while you're in theres" you could run her for a very long time.

I agree that you ought to move the boat if you really want to sell her. But I think you should keep her where she is and just enjoy owning her.