Rob,
I think you're in the right place. I would continue to educate yourself by reading past posts about problem areas and expensive fixes for these cars. This site is the place to do that sort of research.
There are a lot of these cars for sale on ebay, find a couple close to you nad go look at them and drive them but leave your checkbook at home. In fact look at as many as you can before considering a purchase. Occassionally someone on this site will post that they are selling their car, so be on the look out.
YOu may also want to become a member fo MBCA as the Star magazine often has classified from private owners/enthusiasts.
Ken G
1971 280 SL
Silver/red