Nice, packed up your toys and played somewhere else. Awesome. I think 600 is a given and pretty damn soon.
I see with the Brute press being assistance. I assumed it was a strongman type thing you were doing. How about this, every third week or so, do the Brute press first, then bench? Once you've grooved bigger weights doing them after benching might still keep them inching up. Then another bump on the next third week, etc. Or flip it with OHP on OHP days instead. Just a thought.
Just tell me to shut up if you're sick of my thoughts! I'm like Columbo. "Eh, just one more thing....). I can't help it sometimes.