Tony Gonzales and Randy Moss for Hines Ward and Mendenhall?

Should I trade Moss and Gonzales for Ward and Mendenhall? I have Big Ben as my QB so the combo of Ward and Roethlisburger would be great but I also have Miller at TE which is why I really don't need Gonzales but that would mean along with Mendenhall I would have a lot of Steeler players on my roster. Not really worried about the RB situation since I already have Gore, Peterson, and Brown and all their byes are done and I also have Visante at TE backup after this week. I just need to know if Randy Moss for Ward is a good trade after all I have explained especially with Miller and Roethlisburger already on the team. Keeping in mind that Ward has been having a better season than Moss this year.