VFIAX is "Admiral Shares" and has a lower expense ratio compared to VOO. But it also requires a higher minimum investment -- $80k is over that limit. Even if

VFIAX is "Admiral Shares" and has a lower expense ratio compared to VOO. But it also requires a higher minimum investment -- $80k is over that limit. Even if OP splits it into smaller, dollar-cost-averaging purchases they'll still be able to get VFIAX without a problem.