Wow, I've trudged through almost all of this, and I'm still not sure what to think.
My conclusion, the only huge difference maker at 1 (vs. 9), is Clowney. If the Bills can swing a reasonable trade to get him, I would be okay with that. Other than that, I see no need to do it. It appears there will be guys there at 9 whom can make a difference right away (previous Bills draft history aside, they can't really blow it that bad this time, can they?)