Mozart Concerti

[Gaspard_de_la_nuit]

Hey, I have a question about the Mozart piano concerti. I'm planning on learning one, but I was wondering whether some are easier than others in terms of their orchestral parts. I was hoping that, once I've learned the piece, I'd be able to play it with a high school orchestra, but I wasn't sure which ones would be viable for such a group.

Any ideas?