I don't think he can go 149.
This said, a depleted version of him is much better than Mayora (all due respects). Mayora could contend for a MAC title in 2025 or 2026. He'll never contend in the B1G. I would prefer Kim up at 149 and he would be drastically undersized.
Also, Michigan has two prospects that are 2-3 years younger in Mantanona and Gilcher coming in with another (slightly smaller) Mantanona comping in the following year. Add in that Joel Adams will be a factor in a year (or two depending on how he manages Oly-shirt and Redshirt and Gap year stuffs), and I don't know if Chittum would even have a seat at the table.
We have seen consistent improvement from the Mantanonas and Gilcher and Adams and they are younger. Chittum seems to have plateaued off after he bumped up from 145 to 160 and beat Valencia. I do wish him the best. Nobody deserves the toxic effect that is the Focus family. That said, this is his second college he committed to without wrestling a minute, proper, in their singlet(s). Perhaps it isn't just the Iowa or Minnesota cultures and his personal code isn't of a well enough standard to succeed at the D1 level, which is fine - let him focus Freestyle and wrestle for CKWC.