Fair trade offer? WHIR

[Fufynono]

My team:

QB: Matt Shaub, Ryan Fitzpatrick
HB: Chris Johnson, Lagarrette Blount, Beanie Wells, Mark Ingram, Dexter McCluster, Jamaal Charles
WR Hakeem Nicks, DeSean Jackson, Brandon Marshall, Julio Jones, Nate Washington, Antonio Brown
TE: Dallas Clark, Fred Davis
DST: Pittsburgh
K: Alex Henry

Their team:

QB: Ben Roethlisberger, Chad Henne, Peyton Manning
HB: Adrian Peterson, Steven Jackson, Cadillac Williams, Joseph Addai, Knowshon Moreno
WR: Reggie Wayne, Steve Smith (Car), Mike Williams (TB), Mike Thomas
TE: Vernon Davis
DST: Bears
K: Robbie Gould

I'm trying to get Adrian Peterson off of him. I was going to offer Hakeem Nicks, Beanie Wells, and Ryan Fitzpatrick for him but wasn't sure if that was a fair trade offer or not. It's a 3 keeper league and I'd have the prospect of keeping Peterson, CJ2K and Jamaal Charles or DeSean Jackson for next season if I could work a trade. Any suggestion on this trade or other moves you think I should try to do?