Second night trying and down he went! :)
I can't say I'm very pleased with my healing on this fight. It's quite a lot like Chimaeron all over again. Big damage spike on part of the raid, heal them quickly or they might die from the next spike. Rejuvenation mostly end up as overhealing and Nourish always feels too weak and slow. I prefer staying on tank healing and using Wild Growth together with Swiftmend for Effloresence when bunching up. Timing Innervate together with Power Torrent procs and mana wasn't really an issue in this fight (until the very end that is). Large parts of the fight are pretty slow as well so there's room to let mana build up, even time to chat with friends while waiting for something to heal.