Gilbert, AZ
Phoenix is Class B Airspace, but not particularly challenging. Lots of SUA, Restricted Areas and MOAs linked to military training. One is hazardous to your certificate, both potentially hazardous to your backside. Wildfire season here, as it is for you, so watch for fire-related TFRs. AZ looks to be a swing state in this year's election, so Presidential and VP TFRs can pop up with relatively little warning. Again, nothing that different than flying elsewhere.
KIWA has a ramp/parking fee as I recall. Haven't been there o/n, but I think it was $25 if just there for the day; waived with enough $ spent on fuel, or at the attached restaurant (open now???). I don't recall landing fees at either KFFZ or KCHD, which may also be good options for you, but it's been awhile since I was at either, so worth checking. Again like much of CA, this time of year turbulence can reach to 12K or so, so flying high can often yield a smoother ride. This year's monsoon season has been renamed the nonsoon, but if dewpoints get into the mid 50s or above, t-storms can get pretty active, most commonly in late afternoon/early evening.
Enjoy the trip.