I think you drafted awesome with the depth that you were able to acquire, especially at WR. I would probably be starting Bowe in that W/R slot over Nicks until Nicks proves he can be healthy, but you can make that judgement as the season progresses.
It will be massive for you if Spiller can manage to not get hurt. That's one thing that could sink you, as MJD has been inconsistent for a little bit and Lacy is still a rookie. But the fact that you were able to get Spiller, MJD and Lacy as well as Johnson, Bowe, Nicks and Jackson makes me wonder who the hell you were drafting with. Pretty awesome draft by you.
Throw in Manning and Luck as your QB's and I don't think you have much to worry about. The only possibility is RB depth if one of your guys goes down or if Lacy flops. But you have enough depth around the team to acquire a RB if you need one.
Here's my team, if you don't mind: viewtopic.php?t=536369