Black Temple/ Mount Hyjal Healing RequirementsFollow

Honestly to tell you the truth, by the time you're in BT/Hyjal there shouldn't be anything outside of a raid that is an upgrade. Knowing that, there's no way to "shoot" for stats anymore, you're beyond that. When you're gearing up for kara you can get instance/heroic gear and change things around, but if you're at this point (unless your guild returns to old raids) if you don't have something, then you're probably up the creek without a paddle. That being said....

Your mp5 is not ready for BT/Hyjal, simply put. There are fights that you have to spam 60%+ holy light, and you are at 63 mp5 while casting. I think I had that much pre-kara. You're still using green gems in your gear. There's only four reasons to ever use green gems. It is a blue quality item, it is an alt, you have a green gem in your bags and want to use it until you get back to town to replace it, and if it is an item that you plan on replacing later that night. You also don't have vitality on your boots, that's 4mp5 right there. You don't have your chest enchanted. You don't have your shoulder enchanted. I'd tear you a new one if you came here asking if you were ready for SSC/TK, much less BT/Hyjal.

OK, as for BT itself, for the first boss of BT you need to be able to get your health to 10k, buffed. If you can't manage to get 10k, you will die, simply put. I never had a problem with it, because by the time I got into BT (which was more difficult and time consuming than it is now) I already had nearly every piece of gear I could possibly ever want from SSC/TK. Since Blizzard made things easier, you may not have that gear level, so keep your HP in mind. Your crit is fine, if you can raise it do it, but its sufficient to get the job done. Your healing is the level it should be for being in SSC/TK, but that doesn't matter as much because BT is less about gear and more about skill... at least until Blizzard nerfs it anyway.