when you hit TH7 I would do this in order
CC (gold)
Laboratory (elixor)
Spell Factory (elixor)
Army Camps (elixor)
DE Storage (elixor)
Barracks (elixor)
BK (DE) (when possible) but should be a High Priority as its good for Defence and Attacking and can throw an attack in your favour
if you dont want to upgrade defences until troops are done, do walls and traps (gold) after CC
Hi Chris thats what i was going to do but i was going to leave out walls do they have much weight? Ive been reading mixed reviews on this