I'm thinking about trading DeSean Jackson for Steve Smith (NYG). Is this wise?

I have Eli Manning at QB and already have Manningham. I think Smith would be a nice addition to that. This does not mean I will always start them together as I have Greg Jennings and he has some good matchups coming up. I wish I could give him somebody cheaper but he's pretty firm on wanting Jackson. I know Jackson will still put up numbers despite the QB situation but I cannot ignore the fact that Manning has been lighting these two up all day through the first two weeks.