Who should I start??

Ok, this is my current starting pitching staff. right now I have the best staff in my league and some of these guys are having great starts.
I only have these 8 spots for starters, the other two is my closers.

Javier Vazquez CWS
Carlos Silva SEA
Aaron Cook COL
Shaun Marcum TOR
Micah Owings ARZ
James Shields TB
Kason Gabbard TEX
Brett Myers PHI

My question is, I have Rich Harden and he is set to come back this week, so who would you sit in his place.

Thanks and help would be great.

I would sit Silva if I was really going to trust Harden. I guess Harden may stay healthy enough to get through this week, but I don't see him making more than 10 starts the rest of the season.