Shay, get the twin lens kit, and LEARN the camera.
As Poit said, not much diff between 500D and 550D. Both great to learn on.
Lenses, the kit ones will do for now. As I said, use them to learn and build your skills. You will be suprised at what you can take with these.
My opinion, save $$ and get the 500D, and put money towards better glass, extra batteries, flash, camera mounts etc.