And yes, as a general rule, your primary goal is to reach hit cap before you start stacking SP or Haste. Keep in mind though when gemming/enchanting of goals you are trying to reach. I don't recommend fully stacking hit (ie. hit enchant to gloves, accuracy to weapon, etc) knowing that you will be getting or coming close to hit cap soon. Look at the overall picture, and not just what is right in front of you.