Haha yup me too! Plan B is he moves into our second bedroom and I stay in ours with the LO. We'll move his chest of drawers etc in there anyway so we can play it by ear. Our third bedroom (smallest and currently a dumping ground) will be the baby's room after the first few months. I don't think we can plan too ridgidly, obviously we have a small person taking up residence who hasn't been consulted yet! 
Yesterday DH described a whole scenario where LO needs feeding, the light goes on, I get up to feed, we go into another room while he goes back to sleep, for feeding changing and settling the LO, we come back into our room, everyone sleeps. Complicated eh? I thought I'd just grab LO from the cot, feed in the dark, then everyone sleeps. Although I admit I hadn't really thought about the changing/ settling/ cats suffocate baby aspect. Sigh!!!