this is a great idea, I can tell you've done your homework. The thing is, with 8-12 people with you, and all the other people sessioning, yeah it'll get crowded. If you could break up your group and session at different times that could help. I think buying 10 drop-ins would be cheaper than 8?? since they have a punch pass thing, so look into that too. Oh, and the snowflex is cool for getting a simple trick onto snow (ex backflip, rodeo, etc) but the tramps are probably the best way to improve your air sense and to improve overall. Have fun!