My thoughts:
Nolva is a SERM, that means it blocks estrogen in certain tissue, like your chest. It does not stop the high levels of estrogen caused by using
test. So it won't protect you from high blood pressure or prostate problems. It's a very bad choice that most in the body building community still use, sadly.
Arimidex is an AI that competes against the
Test for the aromatase that makes estrogen from
Test. It is very good at lowering sulphatase/estrone (E1) but not very good at stopping E2 (estradiol). Another common mistake. You should not be using Arimidex. Besides being weak at lowering E2 it causes a rebound effect because it is a "competitive" AI. Many people get sides like acne AFTER their cycle because of this rebound.
Letrozole/Aromasin/AIFM Now you're talking. These are suicidal AI's. They attach to the aromatase and kill it. So there is less aromatase in you to convert your
test to E2. This is ideal for steroid users.
Letrozole may be a little strong for many men causing loss of erection and sore joints.
Yes, PCT is to restart your HPTA again. Use an AI with your HCG and add clomid or just continue your AI a couple extra weeks.