Workout and Arimidex question

Hey i have a couple questions

Since the one milligram arimidex pill is so tiny would a quarter of the pill actually do anything? i started my cycle taking arimidex as taking .25 milligrams of arimidex should i continue? i still have a little lump under my nipple from the previous cycle... my current cycle is dbol 35 mg's a day for four weeks and test depot 500 mg's a week for 8 weeks.

my other question is should i hit every muscle group once a week and do about 25 sets per group once a week or should i do about 14 sets per muscle group twice a week? thank you all for reading this and for replying!