If you need another WR, see if chris Henry is still available in free agency. I think the point difference betweend watson and D. Lee will be much greater than the point differential between Galloway and Henry. I think henry is facing an 8 game suspension, so he'll be out a couple more weeks.
That's the thing though, it looks like Henry won't be back until week 10 or so, I really don't want to wait that long. And I very enticed by the idea of picking up another #1 WR to go with Terrell Owens and Steve Smith.
But I think Watson will get about 10 tds this year b/c Brady is on a tear and he likes throwing to Watson in the red zone. It looks as though he may be as good a play as a true #1 WR. He needs to stay healthy though too.