Trade for Legit WR1?

Hey FootClan, need some advice if I should trade for a WR1. 10-Team League .5 PPR, here is my roster:

QB: Wentz, Luck
RB: Gurley, Buck Allen, Abdullah, D Henry, Mixon, DJ
WR: Pryor, Crabtree, L:andry, Thielen
TE: Ertz

Any feedback would be greatly appreciated, thanks all!