MoP hunter dps rotation (a work in progress)

[MiRai]

I'm not running ISboxer right now, so I can't test that, but a question.. can you set predetermined cast times (or delays)

If we're still talking about World of Warcraft, then that would be considered botting.

something like Focus Fire that is an instant and doesn't appear to be on the GCD?

ISBoxer can't "get around" the global cooldown. If you're trying to cast multiple spells which invoke the global cooldown only one of them is going to fire off.