Ok, I think man to man will work as well.
Look Inside is a faster pace offense, whereas Low Post is a slower pace offense. As far as I can remember, Low Post requires good passing for your guards, as they will deliver the ball to your PF/C. In general, if your opponent is superior than you, you might want to use Low Post, as the chance of making the basket is higher than Look Inside, but since your team and your opponent is pretty much equal (your team is little superior in my opinion), you could use Look Inside...or even Low Post...I'm not really sure which one is more suitable.
If any other experts out there can help him too, it'd be appreciated.