I think Andre will be significantly better than any of those WR's this year.
Romo is a bit underrated this year b/c of his WR situation... but I think he'll do just fine.
Brees is solid, but I don't think he's that much of an upgrade to risk the trade.
Plus you've got Palmer and he could be back to form this year as a top QB. (good insurance)
Keep your team as-is.
2010 12-team .5PPR
QB - Ryan, Vick
RB - S. Greene, Forte, Stewart, F. Jones, Sproles
WR - Moss, Megatron, NYG Smith, Floyd, M. Williams (TB)
TE - Cooley
D - CIN (week to week)
K - Bironas