1-T would stack with Deca for even drier gains (Deca has only a 20% conversion to testosterone), how long were you planning on running the deca for?
Due to stimulation of progesterone it's best stacked with testosterone to prevent unwanted sexual side effects (e.g. loss of libido, erectile dysfunction "Deca ****") or use a dopamine agonist such as cabergoline.
I personally don't think your PCT is sufficient mate, this does depend on your cycle length though.