Hcg should be weeks 14-16, weeks 17+ are recovery weeks and your hcg should be used as a pre-recovery while your exogenous testosterone (aas) levels are waning, which is while you are employing the Winstrol and Tbol, to bring you into straight recovery (which I like)
I'd extend the Proviron through week 18 or more, sure it might or might not effect recovery, but IF it did, it would to a very small degree which 1-2 weeks of nolvadex could take care of.
I don't like the aromasin post cycle, especially since you are not running during your cycle. I like running AI's during a cycle and then 2-3 weeks past. But I do not understand why you have no concern during your cycle, but do post cycle when aromatization, while not wanted in large amounts, does keep the ol' ticker working nicely, running an AI while little conversion is happening anyway due to potentially low test levels would run the risk of vascular damage and a major kick to your lipids and triglyceride levels especially with Nolvadex, kind of a double whammy for your health - any raise in healthy lipids should be countered by the aromasin (don't tell me it's better than others, because that is irrelevant here) stopping conversion within cardiac and vascular tissue and the nolvadex raising your triglyerides, ouch. I know Anthony Roberts means well, and his PCT is sound, just not in this context.