Willyville Guy

I drafted Vick, and then grabbed Green as an insurance policy against the risk of Vick struggling in a new system/getting injured again. I felt good about it at the time, but right now I'm the one struggling with whom to start on week 1. I'm partially inclined to start Green and take a wait-and-see approach with Vick. However, I'll have a tough time benching a guy like Vick who could easily blow up. Any thoughts?