I hope we push all in to get Kellen Moore but Darrell Bevell would also bring NFL acumen and could market himself and BYU as an NFL pipeline, much like KY is doing. Bevell is currently in Miami as QB coach, working with Tui and working with Mike McDaniel (an excellent offensive NFL mind). He has been the interim HC twice (JAX and DET) and is well connected in the NFL. I'm sure he could assemble an NFL staff.
I'd prefer Moore because he's younger and brings more sizzle, but I could see Bevell thrive if given financial support and could assemble a solid staff.