Well, first impression of the mileage, is don't worry about it. I love high-mileage vehicles personally, because you can usually get a good vehicle cheap because of it. When they are young, like that one, it usually indicates only highway use, no abuse, which is the best kind of mileage you can put on a vehicle. That GC you are looking at is 4 years old, so has an average of about 30,000 miles/year.
You should have no need to even think of rebuilding it for at least another 100,000 miles, providing it has been maintained the last 4 years. When you put on that many highway miles, all that usually needs to be done is oil, brakes, tires, belts, etc.
My wife puts 27,000 miles/year minimum, and every vehicle we have bought for her runs with no major problems, usually to over 200,000 miles. The last one we sold had 212,000 miles on it when we sold it, and all I ever did was regular maintenance. We are already over 100,000 miles on her next one with no problems.
Anyways, just check for any signs of "abuse" or whether it was used often for towing, check it for overall cleanliness inside, underneath (oil leaks, rusty), etc., and see if you can verify any maintenance records. Sounds like it will probably be fine. By the way, is it a dealer or private sale?
Sorry to be so long on the reply
LOL, but I can't think of anything major that would be wrong if everything obvious checks out, and, obviously if it runs, sounds, drives fine. Good Luck, let us know how you make out!