That's nothing, mine had over 400 hours on it and 6000 dirt miles before I had to re do the motor, it was still running strong just burning a bunch of oil. If you know the initial valve set has been done at about 10 hours your are good to go otherwise I would check them and set them to spec as they will move after break in.
Throw a JD jet kit there, gut the pipe if it hasn't been done, pull off all the smog crap and ride the crap out of it.
M5