Some images to help you with your project......from the mike holt website. The bathroom receptacle(s) as Speedy has mentioned must be gfci protected.
The receptacle can be either a 15 amp 5-15r or a 20 amp 5-20r but the branch circuit must be rated 20 amps with 20 amp circuit breaker on #12 awg copper wire.
Notice that the receptacle that is within 6 feet of the sink and is in
the laundry room is the only one that needs gfci. The one to the right does not need it even though it is within 6 feet because it is not in the laundry room. Simply put... no sink in laundry no gfci required.
Also remember, if it would apply to you, that once the required
number of 20 amp circuits have been run if you bring any other circuits into those rooms they can be whatever you want. Some would argue with this but I've never seen it refused by an inspector. You just need to be sure gfci is where it is supposed to be.The whole idea behind the required 20 amp circuit thing as you have probably guessed is to get the minimum amount of power to those rooms to operate the typical appliances used in those areas without overloads and tripping breakers. There are more and more local codes that are requiring 12 awq 20 amp circuits to all
general purpose receptacle branch circuits. To my knowledge there are no municipalities in KC with that requirement.
You have two choices for a bathroom(s) this was laid out in what I listed in my first post.