You do have to keep in mind, that if you make different classes you may want to level them in their respective zones for a bit...at least until you get the first couple class quests out of the way.

My fiance made that mistake when he made 3 locks...one B'elf and two undead. He went through the trouble of bringing the undead up to Silvermoon only to find they couldn't get their imps. Lots of cursing that night.

Just something to keep in mind.