We’ve talked a few times about this lol. We both have our “phone issues”. That said, were so very close to the iPhone 12’s being released and I know you have an upgrade in your AT&T account so I think it would be better to just wait and if you don’t like any of the 12’s (which I’m not sure I will yet) then get the other SE and your granddaughter will still have her phone.
I have told myself FINALLY after all the back and forth this year... remember I started the year with an iPhone XS, then went to an iPhone 7, iPhone XS (again), iPhone 11, iPhone SE 2, iPhone 11 (again), iPhone X, iPhone XS Max, iPhone 11, iPhone SE 2 (again) and now I’ve decided that I am holding this SE 2 until the new phones are released and then I’m making my decision. The worst part is that I still have the iPhone X and iPhone 11 that I could switch too, but I’m tired of switching my SIM card and my wife believes I am outright INSANE 😂😂.
So while $300 off seems like a good deal I think for now you’d be better off waiting. Just wait until we see the 12’s and if you don’t like them I’m almost sure the 11 pro may be cheaper than now or you still have another SE 2 to fall back on at that time.
I realize I can’t be a whole heck of a lot of help when we have basically the same type of issue, but I can try lol.
I use to be like that but was more buying using and selling for profit and fun, bit of extra cash for tech too. Did it all last year, since i got my 11 pro on release i havn't swapped once, except a few weeks ago only to try a SE which lasted 4 hours.