It's pretty doubtful you'd make it by 9:30 unless everything lined up exactly perfectly. I think Wishes runs what, 12 minutes? That said - I'd probably do it still if I were you. You could try watching wishes from the upstairs balcony of the train station. Then of course immediately, and quickly, go straight to the resort monorail. The resort monorail line is usually shorter than the express. You will be late, but I have always been told they hold reservations for at least 15 minutes. And after that, you may have to wait longer, but they still won't turn you away (absent something ridiculous or the resto closing time). I have been more than an hour late on two occasions (grandma lost ring; wrote down the wrong ADR time) and they took us both without so much batting an eyelash.
I mostly say I'd give it a shot because I have waited for a long time for a table between 9-10 at O'hana anyways. By the end of the night all of the backups equal out to longer waits for tables! I think I had a 45 min wait for a table of 1 on my solo trip!
Ignore 90% of that - I misread and thought you wrote that wishes was at 9! If you watch wishes from the end of main street I really do not think it would take more than 30 min to get there, is what I was going for. You'd beat most of the park out to the monorail lines. So plenty of time!