I don’t know about Compass, but you should plan on commuting somewhere else for 6 months+ at Skywest before you could hold either TUS or PHX. You’ll have to decide whether you want to commute 2 time zones east to DTW or ATL and get a line faster, or commute to DEN, LAX, or FAT but be on reserve a lot longer. Neither are great options. Either way, you’ll probably have to make the drive to PHX first.