If need be you can battle Drifblim. He's very good and will put up quite the fight. He will be at Philly, but he moved up to masters this year, so you have nothing to worry about! :) Thats it unless you want to battle Branny, which he may or may not be attending regionals. Last year 4-4 ain't making me feel to confident, especially with no defined strategey to counter going into regionals, like standard rain last year. But on the plus side, the only people I'm aware of that I have to worry about are you, and KeepBayleefing. I don't consider LudiImpact a threat.
Even if I don't place top 8, I'll still go to nats, I'll be wearin' a hat to Philly that say "G P" or Reebok Hockey. Good luck with your battle against Chortler, even if you loose you can still have an exec spot if LudiImpact does'nt respond.