Test / tren / mast is sold in blends for a reason. Anavar is a great addition if you're willing to run four compounds.
Primo is excellent in a different way. Lots of guys can't tolerate tren side effects for 12 - 16 week cycles. Primo gives you a great look in a deficit, big and full but not bloated looking like with nandrolone or high test. Primo doesn't have bad side effects for most, and it gets better every week with long cycles.
prop tren seems to be a staple in most peoples stack anavar as well if you can find a good connection