Jim,
Honestly, it sounds like you and I are similarly situated. I too have torn into a 67 Fastback, hate to do wiring stuff, am fairly mechanically inclined and willing to try anything. Overall though, I really like playing with fun cars and miss having something cool around. Hence, I have RCR40-31 heading my way in Dec.
If you've played with cars, aren't afraid to ask questions here, like to get dirty, and have (it seems) enormous quantities of patience, I am convinced you can get through it. This forum is incredibly supportive and I'm not too proud to say I don't know something. Someone usually has a way to help someone else out, it's really impressive.
I'll be starting a build thread soon, but not til my car arrives in Dec. You can watch me struggle or triumph depending on the battle, but I'm in the game and I know I'll eventually win it. And after all, that's what playing the game is all about.
My only hangup was figuring out I really wanted to commit to it. After that, it was easy. And in the end, it's only money anyway right?
Cheers,
Chris