American Girl & Boy Voiceover

I am trying to put together a short cartoon video to teach kids about personal finance. The voiceover should be for kids between 4 to 8 years-old. I am in the very early stage. I am thinking of doing a few different videos that would be about 10 min each. There will be two characters: a boy and a girl. I am looking for a voiceover person who would be able to do the voice for the boy and the girl. It is a conversation between two teenagers/siblings, a boy and a girl, for a cartoon video on YouTube. The boy has a lot of debts, and the girl, who is more financially educated than him, is giving him some advice to build financial freedom. I would like the characters to be fun, energetic, and educational. Ideally, I am looking for someone who has done this before. Please share with me your American girl and boy voiceover.