(I have never understood this industry's way of hiring. Long drawn out interviews, and candidates whom are just average that get jobs.
Why not hire a guy for two weeks. See how they do. And of course, be upfront. Tell them this is probationary. You don't sent a guy to relocate, just to be let go in a few weeks.
There are some really great older workers that some company will scoop up when hiring is upgraded to this decade. Sorry about the sentence fragments. Too lazy to fix.)