If we get enough East and West coasters, choosing a central server would be a good idea.
I wouldn't worry too much about starting a guild too much yet, it requires a good amount of people and the tabards cost 1 gold, which is quite a bit for earlier levels.
Doobie: I made a Troll Shaman for the Stress Test, and I was really surprised by how much fun it was. Originally, I thought it was basically a casting/buffing class meant for parties, but I solo'd a lot of the time and found that the Shaman can be a major damage dealer, a sort of tank/healer hybrid.