I definitely have thoughts. If everything you say is true you are already some type of athletic freak. Do you play any sport? From the numbers you give, hard to believe you truly walk around 365 days a year a 5% BF. I know Dexter Jackson, guy with the fastest metabolism I've ever seen. Known him since 93. He is about 7-8% off-season so if that's true it's crazy. At 5'9" 185 if you truly have 5% BF you must be pretty fuckin big as it is. If your BF was like 10% you would be at least 210 and still look good. At 20 WTF. If everything you say is true I'd love to look at the structure of your physique, if it's good for bodybuilding or not. If it is you could easily be a pro BB by 30. If you're blocky or whatever you will never do that but you still must look pretty fuckin good. If this isn't a joke.
As for your cycle, use EQ or Deca not both, doesn't make sense. I'd use more sust especially because it's a blend your getting little bits of testosterone that l release at different times. At 225 mgs I don't see you getting optimal results. Such a small snout if each will release alone. I'd up it to 500mg. The proviron is pretty much useless, it could make you look a bit harder but if you're already taking winstrol I'd get rid of that entirely.
The Arimiddx, no way man, you def do not need an AI. You have 5% BF you said you can't be holding much water. IMO, and most will disagree on this board but others agree fully on others, AI's do more harm to you than good. They are almost to strong so to do them right you need at least bi weekly blood tests better weekly which is not realistic. AI"s are great precontest, you lower your estrogen really low for a short period and you will appear much harder. You can also use drugs like Dbol, Anadrol, test ect, drugs that in the past we had to stop weeks before very close to the contest allowing you to come in bigger and fuller. But you can't do that for lon 6-8 weeks the most. In your case you should just use noveldex at 10 mgs a day. I have a very fast metabolism. My BF never goes above 7-9%. I always use noveldex. Never have a problem with gyno, water retention on any drug and I don't have to worry about crashing my estrogen. After almost 30 years involved in this sport from my own experience and by talking to others I'm 100% sure you build more muscle in a high testosterone and high estrogen environment. AI's will hinder muscle growth. PCT I can't comment on because I never come off at least test.