For the best graphics, you’ll likely want to go with the PC version and a hi-res mod such as this
https://www.nexusmods.com/princeofpersiathesandsoftime/mods/9
But if you plan on playing on console, the OG Xbox had a slightly better CPU and more RAM than the PS2 and the GCN.
As long as you are the legal owner of the code, I don’t see why you couldn’t.
For example, DAVx⁵ (F-Droid, Google Play)
I’d see it as a tradeoff between the convenience of silent updates of Google Play and incentivizing people to go for F-Droid.