I can give you some advice here. Comparing to
our kill yesterday, a few things in your playstyle can be improved.
First, yes you should definitely pre-rj your whole group. Basically, from the first stomp on in each phase, everyone should always have your rj up. There are only 5 peolpe so that's not problem to maintain. Second, you need to use Swiftmend more. After each stomp (or then as soon as it's ready), use SM. You have 4pT12, so that's healing doubled, and you proc Efflo which is strong in this fight. And last, your harmony uptime looks a bit low (possibly due to too little SM usage).
Also, your gearing/spec is off. You have no mana regen talents, but more than 3000 spirit. Sorry, this is wrong. You would get a lot more throughput AND regen by speccing into Moonglow and Furor, and then reforging spirit to < 2000. You can read more TC on that on EJ:
http://elitistjerks.com/blogs/1152-h...oices_healers/