Vis Maior

hey VM i need some advice. i am playing my resto shaman and healing my way through the reg 5 mans (i know im pro right lol). i have picked up some rep gear but most of my gear is t4/5 elem gear and some 70 badge elem gear so i am not anywhere near where i want to be in that area. im currently at 1100 spell power 13.5k mana and about 270 mp5 and 21% crit. i am wondering what the min would be to start healing heroics.

thank you for your help as always, i appreciate your guidance