Aromatise Inhibitors - Clarity required

Planning to start my cycle on Sunday coming.
Test prop 100mg eod
Anavar 60mg ed
proviron 50mg ed
hcg 500iu per week

Cycle duration 8wks
Doc's pct protocol number 1

My AI{letro} is on order, would it be ok to start my cycle and then start letro as soon as it arrives??

Yep, I will.

Your dosages are in the normal range, so you should be fine for a week or two, unless you are very sensitive.