You actually met an OTG person on Pagle? WoW! Classic alliance is really not very active Our horde chapter on Mankrik is more active.
But before you can join an OTG chapter, you have to fill out an application. Please see this post for details: Before You Apply… Things to Know
Personally, I think the best race and class is the one you like to play the most however our dungeon/raid person might have a different opinion.
@OldPunk What say you?