What i do when i pull, both when multiboxing and during "normal" play, is to use Heroic thorw or ranged attack to pull, then run back a few steps behind the rest of my team, and charge back in to the mob(s). Reason i use charge is because it gives me the starter rage i need to get my rotation going.

After the charge i just start using my normal threat rotations. I dont use a castsequence macro for it tough, has played warrior so long that it just comes naturaly without thinking about what im doing. But for you i sugest using shockwave, then the main threat macro you decide to go for.

Considering the long cooldown on shockwave, and since its some aiming involved when using it, i would press this manualy everytime its off coldown, instead of having it in a macro.

I would sugest a click macro that uses TC every cooldown, Shield slam every 6 seconds and devestate as a filler.
You cant always rely on Revenge beign redy to be used when you want to, but if you can fit it in then it belongs between shield slam and devestate in priority. (revenge has 50% chanse to stun with talents, wich is nice if you want to heal as little as possible).

There is 2 reason to not use HS in your macro, if you use it twice before you atack, you just cancle it. The more important reason is that you only want to use HS if you have enough rage.

Also, considerign that you have all magic DPS, i would sugest using commanding shout instead of battle shout. (Both can be minor glyphed to last longer)