Canon 7D: New Photography/Cinematography tools

I decided to buy a Canon 7D with 4 lenses: Canon 50mm 1.8f, Canon 17-55mm 2.8f, Sigma 30mm 1.4f and Tokina 11-16mm 2.8f. This HD capable DSLR is going to be mostly used for just that, HD video. The ability to swap different lenses, the HD capabilities, the control over DOF is what makes this a great buy. The lenses should cover most of the ranges I'm used to filming in. I would like to add a 70-200mm 4f sometime in the near future, but studio lights need to be replaced and proper accessories to complete the new gear need to be bought.