10 weeks is fine - but why are you mixing your esters? I just don't understand why you'd do Tren A when Tren E exists???

You need to start your letro SIXTY DAYS before you initiate tren... otherwise, if you manage your estrogen levels ... with a strong AI, there won't be anything to potentiate the Progesterone I assume your managing with Letro.

And WHAT is that last line???

12 - 16 weeks (1st week 200mg) , (2nd week 100mg) , (3rd week onwards 50mg)