I don't have umbrellas, but have 2 flashes and 2 stands. The flashes need to be clamped to the stands, and I have some ghetto ways to diffuse them. You can borrow them if you want. The only thing I would worry about is my transmitters. They're cheap and picky about setups. Also, they didn't work on a 40D one time, but did work on a G9, D200, D40, and some 35mms. It should work on the Rebel you can try. It really isn't the best setup, but it works.