A Tale of Four Mages-Voice Actors

Hello my name is Quality, an recently I have submitted a fantasy/action/adventure book for publishing. I have also decided to make a video game based on the book. I would like to hire a few voice actors (4) to play various roles in the book, there are at least 30 roles total. However most chapters equate to less then a minute of actual dialogue. So here is my offer:

$20 per chapter for the first 4 chapters, $25 per chapter for chapters 5-52.

Here is what I need:

1 female elderly (generic)
1 female adult, deep voice (warrior voice)
1 male adult, deep voice (warrior voice)
1 female black, outspoken voice

Please also include a sample of your voice as well.