Those bushings are expensive indeed. I think that I got mine from zip products. (Wherever I got 'em, they were on sale for nearly 50% off!)
I want to have my car in the same shape that your is in. (Being able to drive it between projects.) My wife knows that I'm working on the interior, so she points out the cracks in my dash and asks if I buy those new parts too. If I had to save up for all of those parts, the car would never be completed. So, I opted to just get it back together reasonably and start driving it again.
The cam is not a bad job if you have the patience. I used to have a real radical cam in my car (bought the enginer from a friend), but due to the lack of vaccuum, I elected to change it out. I have a Edelbrock RPM street rod cam in it now. I may change back to the lunati cam, but I want to make sure I have the proper exhaust, ignition, and air for that. (remember my air cleaner?) hehe