On pure potential alone, I'd say get rid of Driver. Engram and Hackett can both produce and if anything happens to one or the other, you still have the starting number 1 WR in Sea, especially with virtually no running game.
I like Galloway over Stallworth because Donte is either the 3rd or 4th option in the passing game, with Watson being the other one. Moss and Welker are going to get the majority of the looks in NE, so you only get the scraps from Stallworth.
Galloway is the first and basically only option in TB. Hilliard is there, but he's not poaching too many catches from Galloway, like Jennings and Jones are from Driver.