Fantasy Baseball Advice

[bluef0x]

I'm taking over a fantasy baseball team and I'm looking for advice. You start 10 batters, 8 pitchers. 5 categories for batters, 5 categories for pitchers. It's a dynasty league with contracts and here's my team:

Russell Martin-C
Todd Helton-1B
Frank Thomas-1B
Kaz Matsui-2B
Freddy Sanchez-3B
Kevin Kouzmanoff-3B
Casey Blake-3B
Rafael Furcal-SS
Corey Patterson-OF
Ryan Garko-OF
Grady Sizemore-OF
Matt Holliday-OF
Bob Wickman-P
Cole Hamels-P
Jake Peavy-P
Joba Chamberlain-P
Carlos Marmol-P
Pedro Martinez-P
Miguel Batista-P
Tim Lincecum-P
Bob Wickman-P
Bronson Arroyo-P
Garrett Olson-P
CJ Wilson-P
David Weathers-P
Cliff Lee-P

Since I haven't followed baseball since Ken Griffy Jr's Nintendo 64 game, I need help with the contracts. I can offer any player a 5 year extension and I can also extend any person with a 1 year contract to another 1 year contract. I lose everyone else with a 1 year contract.

Players with a 1 year contract:
T. Helton
B. Arroyo
F. Sanchez
C. Lee
C. Patterson
M. Batista

Players with a 2 year contract:
G. Sizemore
R. Martin
K. Kouzmanoff
K. Matsui
R. Garko

Who should I give 5 years to? 1 year? What position should I look to shore up on for next season?

Gracias.