Divine storm is used for nothing, except pulling someone from stealth. It isn't in your rotation for PvE, and has little to no use in PvP. If you have 3 HP and need healing, you use word of glory. the damage done by DS is so low it's mostly a waste on other players; only useful on mobs if there are 3 or more. I put DS on my + num pad key simply because it's got basically no use unless I know there's someone stealthing about, but even then I have no HP with which to use DS to bring them out of it until they attack. You should also just take consecration off your ret bars because it doesn't really do anything now either, and contrary to popular belief, will not pull someone out of stealth.
Judgement USED to be the hardest hitting spell we had; now it's one of the least hard hitting spells. It's good for long arm of the law, regaining mana, and 'filling' in for extra damage (meaning you don't have 3 HP, your CS is on CD, and you need to be doing damage).
I suggest avoiding using Avenging Wrath around mages priests and warriors for some pretty simple reasons: they can remove it or make it useless. A decent mage will simply spell steal it, leaving you vulnerable, a priest can dispel it (and an spriest, no matter how great your gear, is going to eat you up with dots and LOL on your corpse), and a decent warrior will simply stun you and put some decent damage on you and kill you. Unless they suck, go for it.
Your MS is tank and if that's the ring you're using then what you have is fine until you can get something better to replace it for PvP
. Since it costs 200g to switch I suggest not doing that!
I also suggest just going with relentless, don't worry over wrathful. We're close enough to Cata that you can farm the BGs for a full set within a few days, since you're just going to be tossing it in less than a month anyway.
If you want to get some honor fast, do WG every two hours (extra bonus if your server is prone to winning), and queue for random BGs and your Call to Arms, rather than just joining certain ones and getting less honor at the end of it.
You should buy the PvP enchants, one which you get at the Wintergrasp vendor for 65 honor. I can't recall where you'd get the others, you will have to look that up on WoWhead. You also want to get yourself some enchanter-enchants, with mats. Don't really bother with the resilience ones... once you have relentless gear you will be totally set there. Get the 50 AP on your gloves and the AP on bracers and boots and a +10 to all stats on your chest piece. Don't bother filling out gems and enchants until you have relentless gear, else it will be a waste of gold.
Hope this has helped