I am also doing RoP/Frost Armor/Haste build and having decent results. I am still trying to make the transition from fire's crit gear to full haste gear so I do not have quite as much haste as Dream but I am still getting good results.
www wow-heroes com/character/us/Garona/arcanica/ - WoW Heroes page with links to logs - I believe all of these are after I made the switch from mastery to haste.
us battle net/wow/en/character/garona/Arcanica/simple - Armory
Sorry had to post the links like that since I am new to the forums.