"How would a max spec (1tb) hold up with heavy Lightroom and some photo shop work"
My opinion only, but you're wasting your money.
For photo editing, even a base model should do fine (8gb of RAM and 256gb SSD).
If your photo library is too large to keep on the internal drive, store it on an external USB3 SSD (far, far cheaper), and keep a second SSD for backups.