I think a good question to ask here is what your goals are, and can you do a 4 week cycle of Epi.
I recently spoke to a guy who do Epi: 20/20/20/20. He said he was satisfied with his cycle.
So, yes if you wish to do a 4 weeker you can. If you feel like you want to take it slow for your 1st cycle, by all means.
My experience was that I've been lifting natural for 30+ years. I wanted to break into the scene slowly. I showed up at the doorstep of a very good Forum having done my research. I wanted to do a cycle of P-Stanz, Furaza-A, or 11-kt. I had heard that methyls were too strong.
I was given excellent guidance by some very knowledgable users. I was told that a cycle of non-methyls-only is too mild, and I wouldn't be satisfied with the gains I would get.
I was told to do a moderate dose of P-Mag, H-drol, or Epistane. I chose P-Mag. I was told that 6 weeks was best, and that 100mg was a good dose.
I tried it. I liked it. I recommend it.
My PCT was Nolva 20/20/10/10