I have not cycled in 10 years I am on TRT and wanted to do a cycle. the question is do I keep the Arimidex in or it's not necessary. Not looking for a critique this is my cycle just trying to decide on the Arimidex. 50 yo 6'2 200lbs 20% BF

Week 1 to 12: Testosterone enanthate @ 250 mg every 3.5 days (500mg/week total)
Week 1 to 12: Tren A @ 400 mg every 3.5 days (800mg/week total)
Week 1 to 14: hCG @ 250 iu every 3.5 days (500 iu/week total)
Week 1 to 14: Arimidex @ 0.25mg every other day (From day 2 up until PCT starts)
wait 14 days to start PCT = Clomid @ 75/50/50/50 & Nolvadex @ 40/20/20/20