Voice for 6 cartoon characters

I need English voices for 6 cartoons characters. - Boy (8 years old): Words aprox 274 - Girl (6 years old): Words aprox 164 - Adult (50 years old): Words aprox 85 - Adult (40 years old): Words aprox 161 - Robot (Metallic voice): Words aprox 9 In the project we prefer English native profile as the assigned person will revise the texts (are in english but perhaps can be expressed better). The idea of this project is to do a long-term project. We are going to do in this project the first chapter but we will do more in the future. Please provide voice samples so we can evaluate what voices are optimal for each character. Note: We will need invoice of the work done at the end of the project.