"Then I was thinking of English pleasure, so I put on an English saddle...and put his eggbutt snaffle on an english bridle, and he wouldn't go faster than a walk..wouldn't collect or anything. Once I removed the noseband, he was fine.
So because of the noseband I don't think I'll be able to show English...which is fine with me...doesn't matter "
I'd go with english pleasure in just local club shows, actually. Start lunging him with the bridle. If he still doesn't like the noseband loosen it so it's not so tight, Gradually keep tightening it while you're lunging him. He'll learn to deal with it.
Depending on his conformation as well, I'd look into showmanship classes.