Who should I trade for a WR, Jones-Drew or Clinton Portis? Also, which WR should I go after?

Here's my team: QB: Peyton, Matt Helbeck RB: Adrian Peterson (Minnesota), Addai, Clinton Portis, Jones-Drew, WR: Roy Williams, Larry Fitzgerald, Patrick Crayton, Chris Chambers, Dwayne Bowe, Donte Stallworth, and Chris Henry. TE: Cooley Def: Pittsburgh K: Jason Hanson. Someone offered me Santonio Holmes for Maurice Jones Drew. Should I take that or look for a better deal?