Rotation/Key Bindings

So, I'm going to switch back to my Primary Spec, MM after about ten levels of Beast Mastery, the shots are quick enough to learn again but one thing I'm not sure on, does anyone bind Rapid Fire to any other cooldowns? I'm a big fan of using the numberpad on my keyboard for all my attack shortcuts and I develop mostly macros that combine two or three spells at once in order to keep the key tapping away from my main keyboard. One thing I never got into very well when I was leveling MM was using Rapid Fire. Is there any particular rotation I need to keep in mind or any attack I can bind Rapid Fire with so I can proc it whenever it comes available? Any help will... help :3