I agree with dropping the Boomkin. I love the class, but the PROC based rotation just sucks to box.

I dropped my own Boomkin for a Warlock, and haven't looked back (4500 GS Boomkin for a 78 Warlock at the time... lol)

I've tried 'box healing with a Resto Druid, and didn't like it personally, but I know plenty of folks do it just fine, you just gota get used to a different way of healing.