Are you using the proviron in hopes of it controlling estrogen? If so then it won't do shit. However I believe proviron actually makes test more effective. Something about it freeing up more total test or something...I'm sure someone else can elaborate for you.
Also, the deca is kinda short...why not deca 12 weeks and test 14? Just a thought, all though your gains may have tapered off by 9 weeks anyway.
Is this your first cycle? If so, your be better off just running test and adex. That way you know how you respond to each drug individuallly, as opposed to taking 2 steroids for the first time, together. Make sense?
Just my two cents. I'm sure others will chime in.