I have 105 k on mine, it's the first-year model (94.5). Only issue with the motor has been the cam position sensor (CPS) which should only cost around $75 or so. (stealership charged me almost $500 to diagnose and replace it).
There's a few recommendations, like change the air intake to a Tymar intake for better filtration with better flow, and replace the restrictive stock downpipe with a more-open one. For all the info you want, read the FAQ's and articles on
TheDieselStop.Com - www.thedieselstop.com
It's a good truck, if Ford had just fixed a few little details, it'd be the best truck out there.
p.s. The 7.3 Powerstrokes have mechanical fuel pumps. Mine starts easily even after a few weeks. I believe failure to start after sitting is more likely a result of leaks in the high-pressure oil system, the IPR o-rings for example.