new video camera can record at 60fps-will it work for iMovie and what are the pros/cons going

I have a new HD video camera that can record at 60 frames per second in addition to the 30 frames per second I had with my old camera. I have used iMovie for years and would like to know if it will work with the 60 frames per second video quality. Will the quality of the video be significantly better than the slower frame right? (Typically I am filming quickly moving animals on a safari.). I would also like to know what the trade-offs are. I realize I will use a lot more space on the memory card, but will it also require significantly increased processing times for completing a movie? Please advise.