when/who should i start dealing sp WHIR

[mw26]

10 team 5x5 roto 180pitching starts

p - peavy, lowry, cyoung, hamels, pettite, izzy, dempster, fuentes, otsuka
bench/ir - prior harden sheets wood

c - vmart
1b - hafner
2b - utley
3b - tracy
ss - lugo
of - cabrera, huff, winn, pierre, holliday
mi - weeks
ci - teixiera
util - atkins

i've determined about 5-6 healthy starting pitchers will get me to the games started llimit, and im about on pace with 37 so far. my question is at what time do i start trading my excess of pitching (albeit hurt pitching), and what should i trade it for? standings wise i'm weak at rbi/hr, as well as have kind of weak era(thanks millwood vs twins)/whip/wins with middle of the pack saves/k's and top runs/steals/avg