Agree and disagree with a lot of the posts above:
Knowledge and logic has changed over the years. First cycles do not necessarily have to be test only.
I would not implement an AI unless it is actually needed. Why start another drug when it may not be necessary.
HCG is a must imho. Like a trickle charger for your boys.
Length of shutdown is irrelevant. Your HPTA doesn't have a calendar where after 12-14 weeks you can't restart, etc.
It would be much safer to run a lower dose of test, 3-400 max where you don't need ancillaries and add in mast or primo (ramping up) to drive your androgens up without E2 or DHT issues.
Just my opinion. Best of luck.
Get blood work first to know your baselines. Seriously important. The First Cycle sticky lists them.