Well, my brother hasn't finished the graphics yet, and I'm not sure when he might, so I think I'll have to come up with something else. My own pixel art has been getting better, but it's really not up for this kind of game. Recently though, I've been reading up on how to import vector graphics into Flash games without using the Flash IDE, so maybe I can go that route.
(Rereading my old posts, my pixel art seems to always be getting better, but just not fast enough. I also just noticed that I've been "working" on this for over 2 years now. Ugh.)