Well half the work is done for you already! A guy on the wowclassic subreddit has a fedex/exploration route that gets you to level 10. His profile is (u/awesometographer) Would probably be faster for those gnomes then questing them together. I will be leveling them separately and meeting them up in Mulgore at around level 8 so my kill questing path is starting there. Then around 12 or 13 pushing RFC. I am doing only a single collection quest for a decent ring. Hopefully wed can determine if it slows me down to much. I would recommend looking for odd items (rings or weapons) from quests that outshine others to get before doing dungeons should help with speed. Also if you want to try aoe farming look at wowclassicaoe . com better then guides because you make the choice on what is a really good spot or not.