Sounds like you have a good deal lined up, the engine be it Ford or Chevy will last you a long time, and if the unit was well maintained all the systems will be good for many years too, if you keep the maintenance up. After a few years, say 5 or 10, the mileage will not mean so much. There's no doubt a lot of life left in the baby and it will serve you well, plus it sounds like it's well within your budget range. Put aside a little money for new tires and some of the routine things that need replacing with higher mileage and age (fan belts, hoses, etc.)