I'm a member at founders and yes, it sounds like you are matching their process pretty close.
From what I understand, Oatmeal Stout, Breakfast stout(oatmeal stout + coffee) and Kentucky Breakfast stout (breakfast stout + aged in Kentucky burbon barrels for atleast a year) are all related (Oatmeal stout being the base).
Which Breakfast stout are you comparing with, what was released this winter? I personaly thought it was a bit harsh this year but after mixing with some oatmeal I hear it was better.
Do you have the quantities of malt/type and ammount of hops used from that kit you purchased in Dundee?
I'm so looking forward to founders fest this saturday, they are advertising KBS on tap for the party!