help with pitching strategy for the rest of the week

[dubstar]

it looks like my opponent will get a few guys twice, and i am just getting most of my guys this weekend. i am just trying to decide if i should start my guys or bench them and hope i hold onto the lead in ERA and WHIP.

my remaining starters: Cain @ COL, Greinke v TEX, Kershaw v FLA, Gallardo v ATL

his remaining starters: Price @ TOR, Lester v BAL

stats so far
W SV K ERA WHIP QS (IP)
ME 1 1 17 3.57 1.13 2 (17.2)
HIM 1 0 32 5.82 1.40 1 (38.2)

do I stand a legit chance of catching him in K's? I have some K guys left to go, I just dont want to ruin ERA/Whip in the process or trying to catch something that probably inst going to happen.