Probably been played around with before, but the ACG opens up some new possibilities, so I'll drop this here. It's unfinished, so I'm looking for advice, sugestions, and debate. It's mainly a theorybuild, or just the first 12 levels for PFS. The progression is on the second page.
Some things of questionable functionality:
Pummeling Style currently works with all attacks you can make in a full attack, regardless of if they're unarmed strikes, but that might change if/when it gets FAQ'd/Errata'd
Brawler qualifies as Monk for Horn of the Criosphinx's special line, and the special line for Monks for Horn of the Criosphinx doesn't specify that a Monk must use unarmed strikes to use it, just that his hands are empty. Thus, your natural attacks also benefit on a charge.
Later down the line once you start getting the TWF feats, you can use kicks in order to get full TWF attacks as well as all 5 natural weapon attacks. This is because natural weapon rules for combining them with manufactured weapons specify that you can use them as long as you don't use the same limb. So at level 17, you're looking at Kick/Kick/Kick/Kick/Kick/Kick/Kick/Claw/Claw/Bite/Wing/Wing. And I'll drop this link here too.
Sneak attack dice per attack roll is debatable on Pummeling Style.