I think you should make sure you apply to schools that allow you to defer your start date for a year. You may never get another chance to excel at the highest level you can in figure skating. However, I do not think you should take a gap year and apply after a gap year. Apply now, defer entrance a year.
I do think the figure skating stuff is worth doing but it is worth doing for you, not for colleges. I don’t think colleges will care any more about figure skating than any other EC. Apply now for schools that are reasonable for you (your list is too reach heavy), defer your entrance until Fall 2018 and pursue the figure skating thing (and make some money).