For me there are two trains of thought.
A. Draft Murray if he is available at 13 (not likely). For the next QB, I want a guy with great pocket presence and Murray has that improv gene. Then my plan would involve less tear down of the roster. I keep Josh Sitton and bring in one of the top guards and resign James if possible. I would be a little more active in the FA market as long as I am spending on sub 28 year old players with proven production. No more acquisitions with expectations that a guy be something he has never been before. I would also take a look at centers in round 2.
B. Skip QB if my guy is not there at 13. Bring in a cheap veteran like Fitzpatrick to hold down the fort (or not). More tear down and salary purges. Purge the roster of Tannenbaum contracts. Draft a top DLmen in round 1. Build the trenches to prep for a rookie QB next year. I would also take a shot on a mid-round QB if one I like falls to me.
Not a bad strategy, but doesn't option 1 mean Miami has to find out if they get Murray before deciding on the remainder of that option?