I think it is a question of personal aptitude. I did the same thing when looking for a car. I cannot afford mechanic hourly rates and knew I would have to do as much of the work as possible. I am better at mechanical than body work. I bought a 99 with 80k, Arctic Silver with Boxster Red interior. Body was I good shape better than most I had seen but mechanicals needed help. What do YOU feel more comfortable doing? Also understand you will need a place to work on the car and tools, lots of tools!
Good Luck! and keep us posted!