Trading nolasco for these OF's... thoughts pls on his value

[HighHeater]

14 team league/basic points scoring. I am contemplating trading nolasco in this dynasty offer and want others opinions.

Heres the deal:
R.Nolasco/next years 1st round (rookie) pick
for
J.Sanchez/G.Sizemore/C.Quentin

My team:
C: G.Soto
1B: P.Fielder
2B: G. Beckham
SS: S.Drew
3B: R.Zimmerman
IF: B.Butler
OF: J.Upton
OF: J.Werth
OF: B.Upton
UTIL: J.Pierre
*bench
OF A.Pagan
C J.Montero
1B E.Hosmer

SP: C.Lee
SP: M.Cain
SP: C. Billingsley
SP: M.Latos
SP: R.Nolasco
RP: H. Street
RP: C.Perez
*bench
SP J.Zimmermann
SP D.Holland
SP J.Parker
SP B.Beachy
RP L.Gregerson
RP J.Chamberlain