HELP!!! Trade em' or Play em'????

I'm in a points based H2H 10 team league.

CBS Weekly lineup changes.

Here is my team

C Soto

1B Morneau

2B Kinsler

3B Wright

SS Furcal

OF D. Young

OF Vladdy

OF Fukudome

UT C. Guillen

BN - Hafner

DL - Soriano

Here's my problem I have 2 very good SS and/or 1B and can only play one (Guillen eligible at both and soon to be 3B) I drafted Guillen as my starting SS but Furcal was sitting there still with my 2nd to last pick and I snagged him also. He is on fire so I had to start him but that means I had to sit either Guillen or Hafner.. I really like both of these guys and hate to bench one (I wish one of them had OF eligibility cause I would sit Young.)

However, do I try trading one of them or be thankful I have both and play their weekly matchups and sit the other?

Here's my pitching

Smoltz

Cain

C. Young

Liriano

Maine

Oswalt

Gallarado

Hoffman

Wood

C.Lee

Advice???