I am planning on using letrozole post cycle to keep estrogen levels to a minimum. Here is my cycle, what dosages shold i take daily of letrozole.

wk 1-5 100mg Test Prop/eod
wk 1-10 400mg equi/wk
wk 6-12 50mg winny/ed

I am going to start clomid at week 13, and i have some extra arimidex for first 5 weeks. When should i start Letrozole for psot cycle and what dosages. Thanks guyz