Start buying VOO instead in brokerage account?

I look at my brokerage account as my high risk high reward retirement account. That one is currently 100% VTI and I’m likely not going to touch the money for another 20 years (I’m currently 39). Would buying VOO instead from this moment forward be an ok move? Yes I know they overlap heavily, VOO slightly outperforms though. I’m 80% VTI/20% VXUS in Roth account for reference.