Out of my 15 hitters, which 11 should I start on a daily basis?

Question

I have to start 1 catcher, 1B, 2B, 3B, SS, 3 OF's, and 3 Utility hitters!

Here are my 15 hitters and the 11 guys who I usually start:

C- Chris Iannetta

1B- David Ortiz

2B- Chase Utley

3B- Evan Longoria

SS- Jose Reyes

OF- Ryan Braun

OF- Hunter Pence

OF- Torii Hunter

Utility- Howie Kendrick (2B)

Utility- Chris Young (OF)

Utility- Troy Tulowitzki (SS)

Bench- Jason Giambi (1B)

Bench- Melky Cabrera (OF)

Bench- Alexi Casilla (2B)

Bench- Matt Joyce (OF)

Answer 1

C- Chris Iannetta

1B- Jason Giambi

2B- Chase Utley

3B- Evan Longoria

SS- Jose Reyes

OF- Ryan Braun

OF- Hunter Pence

OF- Torii Hunter

Utility- Howie Kendrick (2B)

Utility- Chris Young (OF)

Utility- Troy Tulowitzki (SS)

Bench- David Ortiz (1B)--Move him into Chris Youngs Util spot when he comes back

Bench- Melky Cabrera (OF)

Bench- Alexi Casilla (2B)

Bench- Matt Joyce (OF)

Answer 2

C Iannetta

1B Giambi

2B Utley

3B Longoria

SS Reyes

OF Braun

OF Young

OF Hunter

UTIL Ortiz

UTIL Pence

UTIL Cabrera

Bench Alexi Casilla

Bench  Matt Joyce

Bench Howie Kendrick

Bench Troy Tulowitzki