I would probably get the ring since you're pretty far over the expertise cap atm and replace the Seal.
You also are gemming for every socket bonus which is unnecessary. Change the gems in your chest, shoulders, legs, and mainhand to all crit gems. Keep in mind that crit and strength provide very similar dps per rating, so 320 crit is better than almost any crit/str combo that adds up to less than 320. You also want to pick up the Unending Rage Glyph as it is mandatory in avoiding rage capping.