Because Brewmasters have several different ways to avoid damage, there are a couple ways you can tweak the stat priority. Of course, depending on your gear level and what content you're doing, it may change a bit.
First off, you need to ensure that you've got your essentials covered: grab as much bonus armor as you can.
After that, there's two central paths you can take: you can either focus on getting mastery and versatility for minimizing damage taken and maximizing effective health, or focus on getting more crit, haste, and multistrike, which bumps up your ability to avoid and heal through damage.