One more thing I will tell you, OP, as someone who has been here a while. One of the most vocal factions here on TMC is the "FSD sucks / dont waste your money" faction. People who like stuff are not nearly as vocal as people who dont. Most of the people who like FSD are waay (waay) (waaaaay) over having a debate on whether FSD is "worth it" any longer.
So, most of what you will see is people telling you that "FSD isnt worth it" because the people who think its worth it are likely not going to engage in that discussion.
With that being said, even those who think FSD is worth it would normally tell you to "take the battery size" first. If the choice is "smaller battery or FSD" the answer is almost always "skip FSD and get bigger battery" even from people who like FSD.
Now, back to your specific case. I will bring to your attention what I said a few posts up. You state your commute is "120 miles round trip, 3-4 times a week". That commute absolutely should have a LR battery, not a SR one. For the reason why, you will charge an SR+ from 90% to 20 ish percent. Thats from 236 miles to 52 miles or 184 miles. Miles will NOT roll off at 1:1 unless you drive like 50 MPH on the highway, which you likely are not, if you have a 60 mile 1 way commute.
So, your 120 mile commute is going to take, if driven at 70-75 or 80 MPH around 150 -180 miles, or, said another way, you will be basically driving your effective range 3 times a week, if you buy a SR+. It gets cold in AZ in the winter (likely as cold as it does in CA) so you will get worse range in the winter, even though you may not live in the snow.
Someone with your commute should be looking at a LR tesla, or they will likely be frustrated with the fact that their car "cant make a 120 mile trip without range anxiety".
TL ; DR ... dont even consider a SR+, get a LR, and if budget is an issue, without FSD (said as someone who has, and happens to like, FSD).