You should be OK, I get 60 to 80 K out of a disk so unless your just riding the hell out of it, just inspect it for broken/loose springs or cracks and clean it real good. If the clutch worked smooth before, you should be OK on the flywheel as well. Inspect it for hot spots, grooves, etc and resurface if needed. Some do it each time, but I only do it when needed and it has worked for me....
1975 CJ-6 1983 CJ-8
1986 CJ-7 Laredo 1986 TJ-7 Trail Jeep
2003 Inca Gold TJ Rubicon