We already have a gate in the laundry room door to keep Owen from eating the cat food. Most of the house is still baby-proofed from Owen, and we can close my bedroom door which just leaves the kids' room, living room, & kitchen. Yes, there's five of us in a 2-bedroom house. It could be a lot tighter... in high school I knew a family of 7 who lived in a 2-bedroom trailer.
I thought Owen was a pretty active baby. If the signs so far are right, Sara and Rachel will make him look lethargic!

They're already into EVERYTHING!!!
Oh, I almost forgot, we went scrounging in my grandmother's attic a while back and got my playpen down.