Who should I start in WK 1 at FLEX?

[ivbaseball06]

I need to figure out who to start at Flex. I know that all 4 of these are gambles. I would just like to get someone who is going to not screw me.

Torrey Smith vs. CIN (tougher defense, did okay against them last year)
Malcom Floyd vs. OAK (easy defense, no running game yet)
Donald Brown vs. CHI (tougher defense, but will get lots of looks)
Peyton Hillis vs. ATL (my wildcard this year, needs to prove himself first)