In answering the first question , Yes this should draw a crowd. Secondly,
It all depends on how much your kids like Tony Hawk. Sure up close would be nice. Maybe score a couple of autographs early, but remember all the action will be in the air. I would think any seat in Northern star arena would be good if you didn't get V.I.P (That's the only place they could hold it , right?)
Last but not least , you could also wait for a trip report from another park and then decide on what to do here