Tara, I'm in the same spot -- all four kids in school all day, every day, for the first time EVER! Wheeeeeeee!
Also, yes. Revisions are so intimidating! But, that's the beauty of computers -- make a new file, chop away, screw it up till it's unrecognizable, and you still have the original file to cuddle with. (Or, more likely in your case, chop away and re-create something FANTASTIC! But chopping is good, even when it's terrifying....)