I need advice....?

Ok so I am having a slumber party. I only wanted 5 people over. So including me there would be six and it would be even. But i dont know who to invite. I already have 4 people but i dont know who the fifth should be. Choice #1: A girl who has been nice to me all year and i see her almost every day in the afternoon. Choice #2: A girl who has invited me ice skating and over to her house all day, she is super nice but she is akward and wierd..........Choice #3: My neighbor who i have known since kindegarten but i dont like her alot and she is 2 years younger than me, i only have girls from my school coming. She wont know anyone and she wil be young and foolish. She wouldnt even be coming except i accidently opened my big mouth and told her i was having a birthday party. If i dont invite her she will tell her parents and it will be a mess. I dont lke her though i dont want her to come. So i need advice. Who should i invite? Please no foolish answers