Cataclysm healing approach

I've been reading a bit and looking up shaman discussion on some boards and I was wondering what kind of approach (spell usage, gear) you wanted to take for cataclysm.

From my interpretation of the talents and the gear itemization I think I'll be going for a build based on High spirit, haste and of course, mastery (shocking!). In fact I feel like I'll end up healing the way I did in Burning Crusade;

1- Always have a HW Queued up. As much as they're forcing us to manage our ressource I feel like the low-mana cost of Healing wave, combined with the effectivenes of the mastery will make a strong healing tool. (This GHW/HW deal is basically what we used to do with downranking, where GHW has a high output but low HPS, HW has good output but incredible healing per mana point.)

2- Riptide used when available - it remains our number one spell to make use of improved WS. (not to mention the HoT is now affected by haste)

3- CH, always CH! - Chain heal along with Healing Rain have the AoE healing niche covered. How much does the raid get damaged on cataclysm boss encounters? I have no idea!

4- the "OHSHIT" heals. - Healing surge (RIP LHW) with it's high mana cost is definitely not viable as a spammable heal, it will find it use in critical moments where individuals take obnoxious amount of damage (Let's remind us such mechanics as Claw Rage from Zul'jin, Dark Barrage from Illidan, Soul Reaper from LK or even Mimiron's Plasma Blast.) Let's not forget about the good old NS+GHW combo.

Anyway, just thought I'd make use of the Shaman forums!