Actually, both of you guys aren't very good at math. It would be 350mg a week.
And Victor, how do you know that you are not gyno prone, you said you've never used Test.
1mg of Arimidex ED is overkill, too little estrogen can actually hurt you. It effects your bones of all things in a very negative way.
0.5mg ED is more than enough, 0.25mg ED would be fine as well. Testoviron is a great brand, I'm guessing you wouldn't have any fakes in Brazil.
Why not just run a regular classic Test/Fina/Winny cycle.
W1-8: Prop 100mg Eod: 350mg a week
W3-8: Fina: 50mg ED, 350mg a week
W3-8 or week 5-8: Winny 50mg ED; 350mg a week
Arimidex at 0.25mg-0.5mg ED
Btw, the 12 lbs of lbm gain is very possible with this being your first with test, but the 6lbs of fat loss seems a little difficult. (Also considering your history)
Aim for a higher caloric inatke, clean, 3500-4000 calories, I think you'll be happy with the results.