advice on how and when to cut

alright Im currently toward the end of my first test e cycle. I have managed to put on about 25 pounds. My starting weight was 157 . Im 5 foot 10 and 28. My problem that I would like some advice on is I have been lifting for 5 or 6 years. I have a good knowledge on how to lift, how to eat and push myself to the limit on a weekly basis. Before My cycle I have been able to get up to similar weights close to where I am at today. Except there would be much more fat gain. even on a completely clean diet eating just above maintenance. and other times 500 cals over maintenance. I have a smaller bone structure and a natural test level lower than the average male my age. I am a naturally anxious individual so in order for me to put on muscle naturally I had to add in practices like meditation and many other supplements and daily rituals. Another words I have crap genetics for building a greek like physique. lol. But its what Ive always wanted for myself and I wont stop until I get there. I want to approach my cut this time with a solid plan different from before. I need to control my cortisol and try to get my natural test as high as possible naturally. does anyone have any advice for me as far as ways to help control cortisol, prevent fat reserve, and muscle loss while cutting calories.. I have never been able to exactly dial in my daily needs for calories because it would depend on my state of being for the week. I have for the first time built some nice muscle and definition, all my major lifts are in the 300's for the first time ever and im feeling good. When this cycles over I hope to shape this into something nice and chisel away to really see my gains. Everytime I try to cut My muslce goes right along with it. im on week 13 of a 14 week test cycle. Im hesitant on stopping without a solid plan. I know i have to continue to bulk through pct but after that I want to cut it up nice. Sorry for the long post. any help would be greatly appeciated

advice on how and when to cut