Pathfinder PvP? [s]I'm not sure the system lends itself to that too well[/s] Looks like I'll have to build around the [url=http://paizo.com/pathfinderRPG/prd/occultAdventures/spells/mentalBlock.html]Anti-Tarrasque Spell![/url]

A short adventure could be interesting, if we all got along well enough to be a coherent party (although I suspect the drama will be half the fun). Not really sure about that homebrew class if we'll all be taking it, though. At that point, a lot of the game is stripped away. It really depends on the kind of adventure you had in mind.