There's no way Version #2 is the plan. IMO they have already discussed trade plans with picks #1-#4 and will know who they are getting by the morning of the draft. The league is different than 35 years ago. You can't breathe on receivers so the value of an accurate QB is more important than back then. This Version lends itself to management thinking, "what the hell, we'll take the best quarterback left". They are too focused IMO to just let the chips fall where they may. Unless they go thru workouts and have 5 QB's they like, not likely. then they could trade to #7 Tampa Bay. All these moves were not made to praying and hoping their guy is there at #12.
You are on the right track for sure. the Bills were aggressive in trades last year; and that was for a receiver and O-Lineman. If they can find a partner; and I think they probably already have, a tentative one(or two)deals are already in the works.They ARE are trading for our next QB.