ChiefsPlanet - Fantasy Baseball Keeper Question

I'm in an NL-only keeper league (auction) with 23 spots (9 pitchers + 14 position players) and a salary cap of $260.

I can keep a maximum of 10 players. Here are my players with what their 2014 salaries would be. My current intentions are after the salary. Thoughts?

John Buck (C) 9 (DROP)
Willin Rosario (C) 13 (KEEP)
Anthony Rizzo (1B) 16 (DROP)
Dan Uggla (2B) 10 (DROP)
Chase Headley (3B) 12 (KEEP)
Troy Tulowitzski (SS) 31 (DROP)
Juan Uribe (3B) 7 (KEEP)
Marlon Byrd (OF) 7 (DROP)
Chris Denorfia (OF) 7 (DROP)
Bryce Harper (OF) 41 (DROP)
Gerardo Parra (OF) 5 (KEEP)
Hunter Pence (OF) 18 (KEEP)

Bronson Arroyo (P) 7 (DROP)
Trevor Cahill (P) 8 (DROP)
Andrew Cashner (P) 7 (KEEP)
Dillon Gee (P) 7 (DROP)
Jason Grilli (P) 7 (KEEP)
Rafael Soriano (P) 17 (DROP)
Adam Wainwright (P) 22 (KEEP)
Cliff Lee (P) 23 (KEEP)

If I did this, I would keep 4 pitchers and 5 hitters at a total of $102, leaving me $158 to draft 14 players at an average of just over $11.

I wavered a bit on Pence and Cliff Lee. I also thought about keep Tulowitzski or Cahill.