No, a few things here.
1- what is success in Afghanistan? (killing Alqueda/taliban) and they keep coming and going from country.
2- what others said, we have enough to sweep the country. Problem is we push them out, they come back in. Or we push them underground (hiding) they come out. Yeah, I think more boots on the ground is always a better Idea. We can leave Iraq I think and It wont implode, but as far a stratigic operations bases, why would we really want to leave?
You know what? lets pull out of germany and Europe, I'm pretty sure they're safe from invasion now. There I have singlehandedly solved our "Troop Crisis"