I don't know why the scene rubbed me the wrong way. It's not really a big deal, and I do adore the movie. I think a lot of it has to do with not having seen the movie in quite a long time, maybe ten years or more, and coming back to that, with all the effects I've seen since then, it's a little hard to slip back into 1978 mode. And you're right about the wahoo and all of that. The kid's having fun. Superman is something of an innocent (his vocabulary, especially when he's Clark Kent, reflects that), so it's an appropriate expression for him. So I do look forward to seeing how your adjustments pan out, and I'm sure the edit will have a lot to enjoy in it.
I guess maybe my only thing is that little tiny scene where we see Clark from behind, from the middle of the back up, where we see his arms moving very slowly. If that scene were oversped a bit, it might help preserve the sensation of speed. As it is now, it kinda cuts into the pace...Clark running fast--hits the breaks, Clark pumping his arms slowly--then Clark running fast again. The shot just feels odd.
But other than that, methinks I need to shut my hole. I'm sure after watching this a couple times, the scene will feel right at home in the movie.