I’d stay on 400mg of tren EW, and then build from there. If you feel fine you pin, if you feel bad, you wait until you feel fine again. 200mg of tren enth won’t put you in a sudden overdose like it happens with ace. You will simply feel the tren on you, making pressure.
Due its long half-life, you might have to wait 1-2 days to feel better.
Take prami or caber, take an AI.
For the Anavar, maybe masteron enth will do the same, but its less toxic and much cheaper.