Hi guys,
I definite don't recommend the kit lenses. I started this hobby 2 months ago. I bought a 40D and 18-55 and 55-250 double kit lenses. I thought I would be just a casual shooter so these 2 lenses would be good enough for a long time if not forever.
After 1 month, I sold both of them and bought 17-55 f2.8 and 70-200 f4 L. I only regret that I did not get better lenses from the beginning. Remember always invest more on the lenses not the body.
If I were you I will down grade the bodies you are going to buy, maybe even go for the second hand ones. Save your $ for the better lenses. The difference is visible instantly.