It's a challenging time to be a potential Apple computer purchaser. For most people, the currently available Apple Silicon machines are too limited to justify a major investment, eg 16GB RAM on the Mini. There's a sense of safety with the current Intel machines though ultimately they too will be obsolete. I was in a similar position not long ago, a moderately skilled LR and PS user who wanted/needed a new computer to replace my 2013 Mac Pro trashcan. YMMV but I opted for a tricked out 27" iMac (Intel i9 10 core) that I hope and expect will last me at least 3-5 years or until the Apple Silicon machines are in a more stable place. I like the suggestion of an Intel Mac Mini with an NEC Spectraview monitor. I am using my original NEC 27" with the iMac, the lovely screen of the iMac is not as accurate. Realistically many people do wonderful photography with an iMac screen. If I did not already have the NEC and the terrific Spectraview calibration system, I might have tried using the iMac screen. You could do worse. Best of luck to you in your quest.
