Dealing Megatron - WHIR

[BearsFan65]

12 team PPR league. I'm 5-1, overall points leader, 1 game lead after six weeks. My roster:

QB - Schaub
RB - Rice, Mendenhall, Grant, Bradshaw
WR - AJ, Megatron, Sims-Walker, Nicks, L Moore
TE - Gates
DEF - Vikings
K - Akers

Roster of another team in our league:

QB - Ryan
RB - J Jones, Slaton, Sproles
WR - Moss, VJax, DeSean, Austin, Hester, Camarillo
TE - Winslow
DEF - Chargers
K - K Brown

I understand the value of "if it ain't broke, don't fix it", but I'm looking at his roster and thinking there's an opportunity here. Loaded and deep at WR, really thin at RB. Do I try and hit a home run here, and offer something like Calvin/Grant for Moss? Or VJax, for that matter? Or reversing the question, what offer for Moss or VJax would you consider, given that roster? Schaub, Rice, AJ and Gates are not tradeable, but anyone else in the right package would be.

I suppose this is the old "do I sacrifice depth for a monster starting lineup and hope to avoid injury" issue all over again. Any thoughts out there? WHIR, thanks!

[BearsFan65]

Bump. C'mon, I know plenty of you have more than a 10-second attention span, I've seen replies to questions way more complicated than this. Any help at all?