I think our best chance is with a guy like Bob Stitt. ISU is an upgrade from Montana and I can see him wanting the challenge of playing in the Big12. He is known as an offensive innovator and would have something to sell. If JP gives him the cash to hire some every good assistants, then they can help recruit Big12 level athletes.
The only other choices are to go after young guys from lower level FBS programs. I don't think P5 coordinators will be willing to come to ISU. It's just too hard to win here.
I'd be pleased with Stitt, but it's one of those things where he'd have to be impressive in the interview. He'd about have to have names of guys he planes to contact for assistant coaching spots. Since he hasn't been in major college football before, he'd have to have an excellent staff both from a coaching and recruiting standpoint.