Surprisingly I did do a heroic as the healer with my gear (yes, I'm in my "holy" set) and we didn't wipe, though my mana regen and spell potency were obviously atrocious (3k spell power...LOL). My guildy I ran with just told me to keep running dungeons and not worry about it, but it feels pretty awful and I'm sure once I get a less than outstanding group I won't be able to keep anyone up to save my life.
I know there's crafted PvP gear I could use, but I don't really want to drop the gold on gear I'll probably replace rather quickly. The pieces themselves aren't that expensive but getting them gemmed/enchanted/reforged adds up.
I could just run as ret but then I'd be praying the healer isn't a holy pally lest I be stepping on their toes for loot, which I don't like doing. Plus if I did that I'd probably just end up staying ret.
Any recommendations? Will probably run the arena scenario to get the 450 weapon but that's all I can think of for now.