I had the same idea a few months ago. Set up both my kids with their own account. They are 5 and 9 so don't post yet but I'm using it as a placeholder until they are old enough to run their own accounts.
Also steemit is still in beta. But for how long? Right now account creation is free but will it always be this way?
Check them out if you get a chance.
@logan3destroyer
@lovelylili
Nice! Way to go!