I noticed that the quest Hana'zua (ID 25128) is not included in the guide. This is an optional pre quest for Sarkoth but requires level 3 so it is not done before doing Sarkoth. But it is still available so it can be accepted and done between steps 43 and 44 for an extra XP.
Code:
step //43a goto Durotar,42.5,69.1 .talk 5887 ..accept 25128 step //43b goto Durotar,40.6,62.6 .talk 3287 ..turnin 25128