Scottsdale's Elevation is 1340 ft.
St. Paul Minnisota 908 ft
the difference will not be huge, however discs fly more stable at higher elevation, and they also fly more stable w/ less humidity.
Your plastic will probably fly less stable but the difference should not be too noticable. You wont have to make any weight or mold changes to be able to throw there.
Z Pred-ESP Cyclone-Z Force-Z Aftershock-Z Comet-Ion-Pro Rhyno