Yeah, it is a slow going process, at least for me it seemed so. like you, I am in the same boat and an army of one, I managed to get level 4 from 58-85, and I am almost to level 5 just from doing dailies. Patch 4.0.6 will go live this week with the new guild exp bonus. so that might help you out a bit there if your looking into gaining some levels on your guild and don't mind doing a bit of dungeon crawling, however if you have never done that before be warned it can get really boring at times, I would advise doing some questing in there as well.