Should I trade for Colston?

Sure it was a bizarre first week, but I've just been offered Marques Colston if I give up Chris Chambers and Anthony Gonzalez. Gonzalez is one injury away from serious production and Rivers seems to be shaping up for a decent season.......but it's Marques Colston. Should I take the offer in a PPR, 10 yards/point, 6 point TD league? (I also have Andre Johnson, Reggie Williams & DeSean Jackson)