I posted about the virtues of that line-up a few days ago: Two guys 6'8'' who have track records of hitting 40-plus percent from 3 opening up driving lanes for Diallo and Wilkins with Moreno inside demanding attention from the defense -- with a great mix of size and athleticism coming off the bench with N'DIaye, Kepnang, Hawthorne and McBride. Should be a lethal and versatile line-up. It's a classic 4-out starting line-up, with the size off the bench to modify that so teams would be off balance.
The coaching staff would need to figure out the best style of defense to play and keep the rotation going to have rebounders in the game as much as possible. But Villanova, to name one, during its championship runs was able to defend and rebound adequately with a line-up smaller at every position than that Kentucky line-up would be.
A final word on the Kam Williams debate: I watched a lot of his video at Tulane. And I get the competition was lesser. But I don't think we saw him at his best at all last year. He had some adjustment issues. Then, seemed to be ready to break out in games against St. John's and Mississippi State. Then he got hurt. When he came back, he was still limited. I think there is every reason to expect a strong year from him.