Thanks for helping with mine.
Personally I love talent and upside so even though it's a risk he might get hurt, I would start Felix Jones rather than Gore or Hunter if Gore plays. If Gore doesn't play then I could see starting Hunter over Felix, but in the end I would still stick with Felix only because the SF's offense is a mess. Hunter was the best RB in the league in preseason, has been compared to Ray Rice and Philly has a lousy run D, but SF's QB/passing game is awful and I would expect Philly to stack the box and come to play after losing to the G-Men last week. Even if Gore were out I think this would be a real gamble to start Hunter here. From last I saw, Gore still hasn't been ruled out either (check though).
Honestly, I'd go Felix. He'll get the carries and plays on a functioning offense.