Would Old Dome Fossil/Kabutops be GLC eligible? Since it counts as a C basic, it technically wouldn't be allowed in an F type deck. Seeing how it's a trainer card though, I'm not sure how this works.
I'm also 31 and just went to my first regionals in Arlington this year. I definitely think you should go, they're a ton of fun! I'm hoping to go to locals once some of my LGS announce their tournaments.