Dragon faction doesn't take long (a session or two in Wakening Lands if there's a group running should do it), that's often a thing required or at least recommended in most guilds.
Howling Stones should keep you entertained all the way to 60 if you like it there... but guild groups are always fun. Try to find a guild that puts these together, or is at least receptive to coming along to one you make
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Good luck on the epic
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