Jackson won't play for at least the first have of the season though right, maybe the entire season?
So here's what I see if we sign Stallworth:
Stallworth as the the #1, Gaffney as the #2 (Caldwell can take some snaps there too, but to be honest I think they're both pretty even, but I'll take the guy with smaller eyes) Welker at #3, Caldwell/Gaffney at #4, and Brown at #5.
But I think people will rotate in at the #2 WR position between Caldwell, Gaffney and Brown.
Either way, if we get Stallworth and Jackson back and healthy, this could be one of the more dangerous WR groups in the NFL.