Keeper help for next year

[JJLinn]

In a 12 team 5X5 keeper league, currently sitting in 4th place. It seems like setting my final list of keepers gets harder each year. We're allowed to keep 12 (plus one ROY eligible hitter and one ROY eligible pitcher). I have a few top guys that are no-brainer keepers, but I'm having trouble with the rest. Keep in mind: we are not required to keep the maximum 12...for example, if someone chooses to keep 10, they'd be given 2 "sandwich" picks at the top of the first round before the main draft starts. Here's my roster:

C: M. Wieters (BAL)
C: A. Ellis (LAD)
1B: P. Fielder (DET)
2B: J. Altuve (HOU)
3B: C. Jones (ATL)
SS: A. Cabrera (CLE)
2B/SS: R. Weeks (MIL)
1B/3B: T. Frazier (CIN)
OF: D. Fowler (COL)
OF: M. Joyce (TB)
OF: J. Hamilton (TEX)
OF: J. Heyward (ATL)
OF: S. Marte (PIT)
OF: N. Aoki (MIL)
UTIL: J. Willingham (MIN)

BENCH: G. Parra (ARI)
BENCH: N. Markakis (BAL)

SP: J. Weaver (LAA)
SP: Y. Darvish (TEX)
SP: W. Chen (BAL)
SP: Y. Gallardo (MIL)
SP: M. Latos (CIN)
SP: C. Tillman (BAL)
RP: C. Perez (CLE)
RP: E. Frieri (LAA)
RP: J. Johnson (BAL)
RP: J. Grilli (PIT)

BENCH: I. Kennedy (ARI)
BENCH: S. Marcum (MIL)
BENCH: Z. Britton (BAL)
BENCH: J. Hammel (BAL)
BENCH: M. Gonzalez (BAL)
BENCH: J. Quintana (CWS)
BENCH: M. Adams (TEX)
DL: C. Billingsley (LAD)

[Fantasy GM]

C: M. Wieters (BAL)
1B: P. Fielder (DET)
OF: J. Hamilton (TEX)
OF: J. Heyward (ATL)
SP: J. Weaver (LAA)
SP: Y. Darvish (TEX)
SP: Y. Gallardo (MIL)
SP: M. Latos (CIN)

You have 8 guys that should be kept. Others like A. Cabrera and Altuve are fringe-y due to teams keeping 12 guys but by no means must be kept. Same for Frazier, who's in a bit of a jam as long as Rolen is still there. Frazier starting full-time puts him in the fringe-y tier.

Which SP should I NOT start? viewtopic.php?f=26&t=452212