Given your equipment, I think you are on the right track. One thing you might think about is to leave your Blonde in the primary a few extra days and shortening the secondary time so you can get the Kolsch in there when it is ready.
Good luck! I would be interested in hearing how the kits turn out. I have used Brewer's Best, but would love to hear more about Williams.
"It is sheer folly to be taken by the hand and led down the path of better brewing by someone who says that they know it all. No, it is your experience that counts most. It is your experience that will always lead you to more questions."