I was going to plan for 17-55mm and decided to rent one out to try but no lens on hand so the next best thing is the 24-105. I was blown by the the range and the versatility of it. Now I am leaning toward the 24-105 now. Still considering the pro and con on both the lens.
24mm on a 1.6 FOVC body is not wide enough. Sooner or later you will want to get the 10-22. Why don't you have the 17-40, 50, 70-200 combination?? price is around 2600 brand new, or around 2200 2nd hand (same as the price of 10-22 + 24-205)