You make some great points, and that is what worries me. I'm afraid of this weak class of QB's and their question marks? The Bills do not have a good record of identifying even average quarterbacks. I wouldn't want to "reach" or "settle" on a QB this year, just because we need one. I agree with a skilled FA QB, and maybe "reach" for a QB after the 1st round. I admit, I only know about the QB's from watching only a few games, and from the posts that are here, but it doesn't seem like a very strong class.
Go FA this year, pick up a "sure-fire" prospect at #9 and build this team for a run in a few years.