Heres my line-up who would you start?

[Bar16]

Im in a 10 team ppr league this is week 1 of the playoffs ... who would you start

STARTING LINE UP RIGHT NOW

QB REX GROSSMAN
RB LESEAN MCCOY
RB RYAN MATTHEWS
WR CALVIN JOHNSON
WR JULIO JONES
WR DEZ BRYANT
TE JERMAINE GRESHAM
K JOHN KASAY
D/ST LIONS

BENCH
QB BEN ROETHLISBERGER
RB LEGERRETT BLOUNT
RB KEVIN SMITH
WR STEVE SMITH (CAR)
TE JAKE BALLARD
DST FALCONS
DST SEAHAWKS

My big dilemma right now is my WR im sure if i should start steve smith against a tough Houston Def. Who would you guys start... i can start 4 WR as long as one of them is listed as flex.