DJ Swearinger is a personal favorite of mine if the Chiefs go this route. Big hitter, versatile, sure tackler and good in coverage. Was asked to pretty much do everything at South Carolina and didn't miss a beat.
I'd say the Chiefs can probably get him in the 3rd. Might go a little earlier if he runs well.
This safety class is a great one. Lewis should be able to be replaced fairly easily. A lot of them are poor tacklers though so that's a big reason I like Swearinger.