I like the 1mg or 1.5mg daily Arimidex. I don't know anyone for whom this doesn't work. Remember, aromatization is a big problem for those with high bf% (15+), so they need more protection. Also, thsoe with past histories of gyno need to keep dosing of aromatase inhibitors as optimal as possible. 1.0mg or 1.5mg of arimidex should be sufficient to combat estrogenic sides from the indicated sust dosing. You will have to keep an eye on prolactin/progesteronic sides from DECA. You may have to adjust down the DECA injections to 200mg weekly if you suffer sides. Or you can add Dostinex or stack some Winstrol. It is your choice, but you have to vigilant.
Lastly, your PCT is inadequate for that cycle. You have choices. You can run HCG during your cycle (250-500U three times weekly) to maintain testicular mass. Then run the Nolvadex 20mg daily the week after the last injection--for six weeks. If necessary, you can stack Clomid 50mg with Novladex 20mg. Or you can do a PCT as follows:
Starting the week after last AAS injection:
Weeks one thru three: 1,000U of HCG, IM, Monday, Wed, Fri; 20mg nolvadex daily; 50mg clomid daily (if needed).
Weeks four thru six: 20mg Nolvadex daily; 50mg clomid daily.
Weeks seven, eight: clean.
Given your proposed AAS cycle and your proposed PCT, it will take most people months to recover. Perhaps you have superior genetics and you have done this PCT cycle before.