If the Kings are in that 3-5 range for the draft, we should take Kemba over Knight and be very happy. The kid is a flat out baller who will be able to come in right away and contribute. I see him being a guy who can penetrate at will, and then either dish the rock or hit the floater. His athleticism is off the charts and, most importantly, he has an absolute desire to win, now burnished with a national championship.
The argument against him seems to be that we don't need another score-first guard and that he is too small to defend other PGs.
To the first point, he had to be a scoring guard on the UConn team because they absolutely needed him to be. However, on the Kings, he wouldn't need to be the number 1 scoring option. If he can come in with the mindset that he should look to get his teammates involved first, then I think he can be a great PG. As we have seen in this league, players can change their games to match what is needed of them. Hell, even LeBron James is doing it.
Concerning his size, I really don't think that it is an issue. If he was the type of player who did not care for defense, then it could be a problem, but I believe he's shown to be a pretty tenacious defender. I could see him being a thief in the night in the NBA. Pair him up with Tyreke at the 2, and we have a good, potentially great, backcourt. It also doesn't hurt that they are reportedly friends. Now, we could bring Thornton off the bench, which is his ideal role IMO. He could be the designated bench scorer, a la Jason Terry.
The issue that arises is that with Kemba, Marcus, AND Beno, we would have a backcourt that is a too undersized. However, in this rotation, Beno becomes expendable. I'm not sure of the best way to get rid of him, but he could have some trade value. In any case, the idea would be to replace Beno with a solid defensive player with good size. Are there any more Tony Allens out there??
In summary, if we can't get Irving (and even then I'm not sure it's a given that Irvings better), I think we need to target Kemba in this draft. Knight, to me, is more of a project who I think basically projects to a Lou Williams-type player. The only advantage that Knight has is that he is taller. And a few inches of height is not enough to sway me in that direction when Kemba is clearly the better player.