I've spent 10k on mine so far, when I get back from holiday the only real effort left is new sockets in the living room and throwing a new floor in. The rest is just bits and pieces as and when.
My god it's been stressful though.
Try completely gutting the place back to brick and timbers. Scary as hell when you see them ripping all the old ceilings down and taking the floors up! Also, knocking through the downstairs was terrifying to watch!
I agree that it can be a really stressful experience. It made perfect financial sense though, plus I have the place the way I want it with wiring, sockets, etc etc. 4 years here and I'll move methinks.