Fantasy Question II

Which 3 do I start (I have a flex position in my league and no good 3rd WR):

1. MJD
2. Reggie Bush
3. Larry Johnson
4. Rashard Mendenhall (Fast Willie is out this week)
5. Le'Ron McClain

Do I continue to start Larry Johnson as my 3rd RB, or should I try to slot in Rashard this week and take a chance against a tough Baltimore defense. I'm going with Larry most likely, but his first two week's were attrocious...

I've been starting 1, 2, and 3 the first 3 weeks obviously.