He is a speed based kid, running 30-50mpw rn. Warhurst is heavy on hills and intervals. This is the complete opposite approach from Smith and NAU (not saying Smith is a bad coach, he is excellent for aerobic monsters). I worry he will go there and crumble under that mileage and lack of intensity.
If he PR’s again this indoor or outdoor seasons and runs in the 3:55-3:56 range, I’d rather see him turn pro and continue to work with Willis and Warhurst. Take classes and get your degree, but take control of your own running!!