Just get it started first... then, take a ride around and see how it runs...
If it feels okay. it's okay,... if it feels sluggish, or backfires like something ain't right,.... ... well,.. you know...
...
...(actually,.. the higher elevation will suck away a pony or two... That's to be expected... You'll feel it yourself, if you try a hike)...
Thin air...
... but, just see if the bike seems relatively smooth, and isn't totally out of it's element...
...(if you have stock jetting, it may even run a bit better)...
If you don't want to rejet,... try slapping a Harley shorty on there...
that might lean you up back to normal...
...