Farming T10 W7500 – What should I focus on to reach T12 W4500?

Hey all,

I’m currently farming Tier 10 Wave 7500 comfortably, and my next goal is to reach Tier 12 Wave 4500.(I did make the T11 4500 milestone but not farming here.)

I want to focus my upgrades properly instead of spreading resources everywhere. Here are my current eHP-related labs:

• Health: 50
• Regen: 50
• Defense %: 98%
• Wall Health: 94%
• Wall Fortification: 31 (620%)
• Wall Thorns: 14%
• Wall Regen: 14 (140%)
• Death Wave Health: 22(1050%)

Modules (all Mythic):

• NMP
• GComp
• Plapse

Given that T10 W7500 is stable for me, what should I prioritize to make the jump to T12 W4500?

• More raw health scaling?
• Push wall thorns harder?
• Increase wall regen?
• More fortification?

For those farming T12 4500+, what made the biggest difference for you? I'm very very far away from Pbh so that's not an option. I also know my next (4th) UW is CL but don't want to go the damage route either.

Appreciate any focused advice — I’d rather heavily prioritize the right 2–3 things than level everything slowly.

Thanks!