@First Sinner, no they are not at all the same levels, ik that from experience. Pryce's ace is Level 34, and Chuck's is I believe level 31, Im not sure about that one tho.
I think it would probably make more sense to fight Jasmine first, as there are no trainers in her gym, (although you do have to fight some in the Lighthouse.) Jasmine's fight is pretty easy, as two of her Pokemon are Magnemite, but Pryce is definitely a hard one to do first.
My order would probably be Jasmine, Chuck, Pryce.