Ma'am, if you ask me, the problem here for him isn't in the age or hanging weight, it's in these calves coming off the teat and into the honey bun factory. I think he'd do well to keep them to hay and grass with some creep or cubes longer, cut the straight cake out or down, and since his final feed out is 90 days, hit them with WSC and a protein heavy byproduct. If he's looking to cut costs even more, a protein additive of free choice nature while on grass and hay with a 90 day WSC and additive finish for roughage and rumen health might be a ticket.
I mean, these cuts look almost like hog cuts.
Biggest problem, at any rate, is the TSC. You can't feed animals from there unless you're ready to eat the cost. It's the agricultural gas station.