Of course you want to maximize your rotation, go to noxxic to get a feel of whats right then go to EJ to tweak to the max. The more steps you have (if you are using isboxer) the better you can make your rotation, in fact you can write enough steps to last 30 seconds and take into account a lot of cool downs.

I'v tending to avoid all this by making mages for dps and just using mage bomb as it does not require facing. Still I cascade steps to use up cool downs when they are available.

We will see how I do in pve as I only have 4 guys left at level 89 (signatue is old).