One other random note since you'll be doing a lot of outdoors stuff: The Oracle Control Road that goes from Oracle up the northeast side of Mt Lemmon is a high clearance 4WD road. I've heard of some GPSs giving directions up it, so don't use it (it might even be closed this time of year).

The Catalina Highway (the main road from Tucson) up the south side of Mt Lemmon is paved and fine for all vehicles.