Our WR corps with Jennings (no guarantee on that, unfortunately), Hartline, Bess, Matthews, 2nd or 3rd round draft choice, 3rd or 4th round draft choice, and a wicked competition between who was in the bottom of our roster as of the end of 2012 season.
I really think this is good enough if we can improve the TE position too. You could also bring in a more affordable scat-back/poor-man's Darren Sproles type with Lamar Miller and Daniel Thomas. I really like Thomas in 3rd downs though, as he's the best blocker and is good in space for screens or check-downs.
I do worry if Miami would have to spend more to pay their FAs. I mean, if they let their guys test the market, are those guys gonna take less from another team just because they're pissed at Miami for not locking them up earlier. This is worst-case scenario. Like, would Hartline demand 7 mil from Miami but then settle for 4 from another team just to spite the Dolphins? I understand the human nature logic of it though.
Getting back to WR, though. I do think if we can get Hartline for a reasonable figure and Jennings, plus what we've got on the roster and non-1st round pick, then we could really use the draft on other serious needs like DB, pass-rusher and MORE O-LINE.