With Mac, you can't limit your thinking to now. You must also consider ALL of the future in which you use this Mac. Any kind of "get by on..." and "for now..." mentalities should generally be set aside. You buy for the greatest need you will have for the whole life of the device. You can't even fully know that in the present so it's best guess.
Advice above is good. Generally,
more RAM for those apps the better, particularly PS. I went 64GB myself while cursing the jacked pricing by the sole supplier of RAM for these things. It cost too much but I don't sweat running out of RAM and using SWAP... and expect it to keep cranking for 7+ years.
Apple does tend to do things for Black Friday. It doesn't mean you'll get a discount for this particular want though. The better option available to you right now is the refurb store, which does include
"latest & greatest" Mac Studios with both 32GB and 64GB of RAM. Most people feel Apple refurb is as good as new and comes with the same warranty.