Thanks for all the replies - I've set it up now as follows (@28 now)

Code:
/castsequence Mana Spring Totem, Searing Totem, Stoneskin Totem
/castsequence Healing Stream Totem, Searing Totem, Strength of Earth Totem
Works pretty well. Will have to update it once I get ToW as that's probrably gonna be the one I use first and foremost in the rotation.

I'll take a look at the whole shift/alt modifier things - Perhaps I could have it as;

for example;

Code:
1: Shift + 1 = Tremor
1: Shift+2 = Earthbind
2: Alt +1 = Tremor
2: Alt+2 = Earthbind
If you catch my drift? So I can lay one on one without it affecting the other. (Dualboxing only)