You should register as soon as possible, space gets filled within a week or two for open and about a month in advance for ams.
If your 17 and want the full experiance, see if you can be a caddy. My buddy caddied for Nikko for the championships year and it was an awesome experiance.
I have to disagree on hyland being easier then Kaposia. Maybe I'm biased from playing Kaposia billions of times but aside from #5 the difficulty just isn't there.
As to those classic promo discs, those are pretty sick! May I ask what kind they are? And lol on the Acorn, can you imagine a card of pros tackling Acorn? 17 down may take it!