I can't wait to be able to use cloth diapers on a newborn again! Actually, we didn't even use cloth on Casper for several weeks after he was born since he was too little for most of the diapers we had. And then, when he was about 6 weeks old and a little bigger (around 7 lbs, maybe?) we started using cloth along during the day and were still using sposies at night because I was a little nervous about using the cloth at night. I think Casper was 3 or 4 months old before we were using cloth 24/7.
Now, after using cloth for 2+ years, I know exactly what I am doing and plan to use cloth from the start. We will use prefolds and Thirsties covers at home and will buy some newborn AIOs, like Rumparooz to use when we go out. Once he outgrows those we'll use half of the bumGenius stash that we use for Casper for the new guy, splitting the colors up (maybe baby will get blue and white?) so we can just leave those in the appropriate size and will just be able to grab the right color for each kid easily. Hopefully Casper will be potty trained soon though, although he doesn't seem to have very much interest yet.