I gotta say, if im the head coach my offensive coord will be running my offense and doing things my way. If I get fired, it's gonna be totally on me and not because I let one of coordinators do their own thing.
Now, if I know I have no clue about offense, yeah, I'm gonna hire the best off coordinator I can find a let him do his thing until I gain the knowledge of how to run an offense. This is just good wisdom.
By the way, I would install a power run game mixed with a little spd and load option, with pa being my main pass offense. Defensively, I'd be 43 base with predominantly zone coverage. A lot of bend but don't break, trying to force fgs and turnovers. Stout against the run, but gonna give up plenty of pass yardage.