By the way congrats on the wedding !!
to early I still have to wait 3 days before I am allowed to say: yes I do ;-)
WR3 30 passes for abouit 400.
I think it totally depends on how good WR1 and WR2 are in combination with the quality of the QB. If I correct the QB's target are in WR1, WR2, HB1, TE1, WR3.
IIt also depends on the game plan, if most plays are only with 2 WR's the possibility is not that big that WR3 sees a lot of action