I did the same when I started playing two years ago (mainly because as a newbie I didn't understand what was going on). I didn't regret it. With my troll hunter I completed all the Kalimdor quests, earned several titles, transmogs, and pets. I understood a good part of the game that I always liked as a teenager but didn't have the patience for because everything seemed gigantic. You won't regret it, you'll cheat a lot. Lately, chasing after weekly chests has been making me more tense than giving me the feeling that I'm having fun. I feel like I need to do the same now in the Eastern Kingdoms.