I have been back and forth on the topic of test/tren cycles and the best dosing protocols. I have always run my Test lower than my Tren mainly because I’ve heard of so many guys developing more sides with higher Test. That doesn’t mean I’m not going to try high Test, low Tren on my next blast though lol.
As for Sust having multiple esters to work with, I would imagine the combination to be a lot more user friendly than your standard Enanth or Cyp with higher doses and Tren.
If you’ve never used Tren before, especially Tren E, I think 400mg is just too high to start with. I rarely run higher than 300mg of any Tren myself. I just don’t see it as necessary. If you have used it, then you know how your body will react so you may be ok with 400.
I do highly advise running your Sust a few weeks longer than the Tren so I’d plan to stay on the Sust for 12 weeks as the Tren will shut you down hard and the longest ester of you Sust won’t be enough to maintain Test levels.
Lastly, as I’ve been repeating this more often over here, I recommend switching your Arimadex to Aromasin while running any 19nor due to the fact that Arimadex has some pretty harsh and adverse effects on lipids and compounding that effect with a 19nor that is even worse on lipid profiles isn’t a very good idea.