Replying to Windells sessions

I'm probably going to Windells for the first time this summer and I'm wondering what session I should go. I like the pros from 5 the most, but I also like 2. Is the snow significantly worse later in the summer? How much of a difference do the takeover pros actually make? Also some general questions, how are the demos? I saw they have a mtb track on campus, would enduro bikes be good for it or is it more of a bmx/dirt jumper thing? How soon do I need to register before everything fills up? How much better can I get as a fairly low level park skier?