Greetings of the day!
Actually, this project sounds like a perfect deal to me. Thing is, I work as a team with my husband, and he is precisely a native Spanish speaker with the exact delivery style you need. He has charisma and sounds really convincing, plus he can easily imitate different accents or manners of speech, if needed. He frequently gives lectures and participates in internal company campaigns as a speaker, so he has quite some experience. Feel free to contact me so that we could discuss the project in more detail.
Have a great day,
Anastasiia