Skydiving?

I am looking for a few people who would like to bike and camp to Skydive Chicago? I am still in debate if I want to depart from Chicago or Joliet, either way we get a discount on skydiving with groups of 3 or more. I am planning on a two night stay, a day to get there, a day to skydive/hike/swim/rest, and a day to ride back.