if you are going to play on master its gonna be a tough road. regardless of which level you'll play, you will have to use the alteration school and buff before every fight. get the oakflesh tome in riverwood asap. unfortunetly you will not be able to take the mage armor perks because of the armor rating in the mask, gloves and boots. you could supplement with smithing perks but it doesn't really go with your character.
edit: sorry, i forgot i read somewhere that miraak's equipment is unable to be improved through smithing. so never mind that part...