It says I should get as much mastery as possible but should it get hit/exp cap first or just take what I can and just keep boosting mastery? I've been getting different opinion and wonder if any feral druids know. --- 4 and 1 odd!
technically, you don't *NEED* the caps. Simulations can attest to that.
however HAVING hit/expertise makes a huge quality of life improvement as you won't need to be so into reacting to a miss.
Another consideration is if you're taking DoC (and technically you should be for PVE feral), since a miss with the buff active will still consume a stack. --- The Sun was born, so it shall die. As we were forged we shall return. I know in darkness I will find you, giving up inside like me.