if you plan on doing slow motion, but not to slow, 1080 30p will be fine. if your going to be doing a lot of slow motion, shoot in 720 60p. then all of your footage. if you dont know if you want the shot to be slow motion or not, then be safe and shoot in 60p.
my favorite thing to do is shoot everything in 60p then conform it to 24p. so the shots will play back at 40% of real time (correct me if im wrong), then if you want full speed, just change your speed and multiply it by 250%
sorry if im not making much sense here