I am 50 yrs old, 220/20% bf, working out every day for the last year and considering a cycle when bf gets down to 15%.

I am already on TRT (50 mg testosterone gel 5g per day).

Having said this, how does my TRT affect what I take for a first test only cycle?
Do I still need the hCG and Arimidex ?
Do I need PCT?, or do I just resume the gel?
My pre TRT test was less than 200 so my nuts are already shot I think...