your minor almost certainly won't help you...i did a concentration in legal studies for my major and doubt it made a difference (in fact, even knowing the cases didn't give me an advantage in class since the analysis is so different).
a 3.39 will be balanced out well by a 170+ lsat, but don't submit your applications until you get that score. if you get a 173, you're almost certainly assured a place somewhere in the 7-14 range of t14 law schools (duke, uva, michigan, penn, berkeley, GT, cornell, etc.) and you have a decent chance at columbia, chicago, or nyu. but as everyone says, you could end up extremely disappointed by your score.....so study a lot and plan your application strategy after scores are released.