I tried a few searches but its a bummer that the engine doesn't do well with numbers. I'm wondering if we shouldn't have a seperate sub-forum for leveling guidance?

Anyway, I'm non RAF (my team started a few months back and I'm leisurely ). My four boostees are level 52. I've already done Hinterlands, Felwood, and Western Plaguelands.

I'm wondering if Winterspring, Eastern Plaguelands and (I dread it) Silithus will be enough to get me to 58. I'm thinking no chance.

So, any thoughts on other zones to quest, if any?

Alternatively, if I need to use my booster to help my team grind some instances should I do that now or burn out my remaining old world quests first?

Thanks in advance for any guidance.