if it's jetted right by your dealer or you for your ride elevations temperatures, then no mods are necessary. It will run fine. With your range of temps and elevations, I would suggest an extended fuel screw for on trail fine tuning. also summer to winter temp variations in utah means probably a seasonal change of pilot fuel jets. If you want some brighter performance beyond stock needle and variation of fuel jets tuning, then Dale's kit is a good one for the Fe650e.
The bikes are covered in quality components. In My opinion, they don't need no stinkin mods, but the Husaberg force parts catalog has nice factory mods available like a tall seat, bar risers, and even after market pipe, etc. and there is a large tank now from BOSS and radiator guard, and a slid plate is available too, yada yada. full wrap hand guard systems that fit Ktms, will fit your bike as well
Utah on a Fe650e!!!! WOW congrats. have fun. give us a ride report!