4 slots: head, ring amulet and gloves, you can use an falmer helmet and circlet to get 5 slots.
No body slots, does not mater if it's raged robes, fine clothes or daeric armor.
Smithing is hands, ring amulet and body, blacksmith apron is pretty fitting here.
http://www.uesp.net/wiki/Skyrim:Enchanting_Effects has the full overview.