Okay, I've kept quiet about this since you first posted but now that Barbara is back I will step forward.

NOOOOO!!!!!!!!!!!!!!!
Don't give them away, you have to keep them!

Okay, with that off my chest, I am really concerned about the dog door. I know that if any of my cats had access to one they would go outside in a heartbeat. I can't imagine any cat, no matter how content of a house cat, not wanting to go out through it at some point and probably sooner than later. That really worries me about Lucky and Chance. I wouldn't think these guys are going to close off he dog door either - not with three dogs.

I know you will do what is best for them so I'm not trying to give you grief. I just really, really, really love those guys and would miss them terribly.