Quick question about Battle Jump.

[Starfols]

Well, here's the specific thing I want to do with it. It may not be possible, but the possibility is nagging at my brain.

Dervish dance, and use movement mastery and an obscene jump check to battle jump each attack.

I think that works, vertical movement would should count, as far as dervish dance is concerned, and as long as you can jump 5 feet

You could jump around someone, jumping 5 feet horizontally, leaving him still within reach. If they're medium or smaller, you could also just jump over them.