I think ILB and Slot corner will be very interesting and right now to call who the starters are is quite premature. OLB less so, because the one is obvious (Floyd). I'm not at all sure about the other. Depending on what happens in training camp and preseason, this could be a surprise. I'm not predicting it, but don't be shocked if the non-experienced Lewis is the starter IF he shows well enough in the preseason, because his potential is higher. And only playing will develop him.
Nonetheless, there will probably be lots of rotation at the non-Floyd OLB spot during the year to see who steps up when the games count. While I expect Kiser to be a starter, I think Reeder could well be the other. That kid played well last year, and is a bit of a physical thumper. If they play a lot of big nickel packages, don't be surprised to even seen Reeder over Kiser early on.