I have an '01 just turned 109k. The ball joints, wheel bearings, etc were all good until about 95k... Theres no way you'll need them within every 12,000 miles. My ball joints and wheel bearings lasted over 90k WITH NY winters and very salted roads..in fact, the only reason i really changed them is because my abs sensors were worn out, and i was sick of my abs light being on lol...I've had some minor issues- broken torsion bar, 4wd module, 4wd harness burned out, tranny slipping-the wrong fluid was put in at 87k, and that was what caused the slipping-now it shifts fine, shocks were also fine until about 75k... Most of the stuff on the 6 year/75k warranty isnt even going to effect you i wouldnt think. thats how ford makes their money...But as mentioned before check for the 2-3 tranny flair up, and the tires. My trac came with general tires, so i didnt have a problem with the goodyears as most members here do. Now i run bfgoodrich all terrains and after 9k miles, they still have the yellow markings from the factory on the tread. My newst problem is the alignment-iwill need a camber kit installed, which should be next week.. I do also think $19,000 is a little steep, but remember its a dealership(stealership) someone probably traded that in and got $15,000ish, and they raised it to 19...i was looking at an "03 with 21k miles and that was only $20,500.
Good luck,
Andy