Right now I'm a cinematographer for many short films in the highschool film world, but I want a DSLR for my freelance stuff, such as snowboarding, wakeboarding and skateboarding. I also know about the 5D's full frame and it does not sound too appealing, and glass jumps by about $200
How much are your parents wiling to pay? I would assume that alone would take the 5D out of the picture since it costs $800 more.
The 7D has better video modes - 1920 x 1080 (30, 25, 24 fps), 1280 x 720 (60, 50 fps), 640 x 480 (60, 50 fps)
5D -1920 x 1080 (30 fps), 640 x 480 (30 fps).
The full frame of the 5D is going to give you better image noise performance at high ISO, which I think won't be that useful for what you are doing).