I'm hopeful he has learned his lessons by now, but my experience has been that guys like Zook, Mushchimp, and Sidehat never learn from experience.
You're quite right though, I wouldn't have been happy with us hiring a DC from FIU. UF doesn't hire coaches from the Sunbelt. We should find guys who are doing well in the Power 5 and hire one of the best. Its not like the Miss States and Louisvilles of the world have more money than us. Torrian Gray is who we should be hiring, not that Kirk Callahans.
Guys at FIU, if they do well, get promoted to USA or whatever they call the Big East now, not to the SEC. He should be in the market for these guys only after they have proven themselves at a Houston or similar.