Good team, definitely strong enough to contend throughout the season. My main thoughts:
1. Do you need 7 starters? Downgrade to 6, and use the P spot to throw a setup guy or closer out there. He'll add K's daily, and have a nice impact on your WHIP and ERA.
2. I'd look to trade the SP you decide to drop, packaged with either one of your 2B, SS, or 3B to upgrade in one of those areas. This will open up a roster spot, into which you can slot your RP.
3. Not crazy about David Freese for anything regarding fantasy. Are there any power or speed guys out there (or even another RP) you can add?
Let me know if I can help further; good luck!