I think Eman has a point I'd personally slide the tren back to week 8 and run it till the end finishing strong and dry. Winny really no reason to pin it if its water based, just drink it. The only thing I don't really like is you have a ton of downtime at the start of the blast, but its a long ester marathon things take time. Or you can start with 4 weeks of winny and let the primo build, drop winny week 4 and pick up tren week 8 after some downtime for your liver....
Keep caber on hand but unlikely you will ever touch it, as needed only.
What label primo?