Propecia, arimidex, hairloss

I took propecia briefly and experienced the onset of gyno. Also felt really flat in the gym. If I had combined this with arimidex would I not have been as flat and gyno-prone? Also has anyone ever heard that blocking estrogen in general is good for the hair? I ask because MPB accelerates supposedly as one ages…but test actually declines and est. increases…so maybe est. is a potentiator of DHT?