I jet size every 2500 feet is usually the call. However the Indians on their epic road tours up to 17,000 feet usually don't bother changing the sea level jets until about 12,000. If yu jet your bike for 5000', which you should, 10,000 will not be an issue.
It's the racers looking for ultimate performance who change jets at tehsoe samell increments. Street riders need not worry!
I lost a scrambles race in Laramie, Wyoming (7500') once because I didn't rejet my bike from the sea level setting. The other guy just had a hair of power on the straights, but I was beating him the rest for the way around. Just never could quite get around him! I just need that smidgen more power. I never did that again!
Bare