Hi Nathan!
My name is Gastón, I'm a music composer & producer currently based in Ciudad de Buenos Aires, Argentina.
I've read your job post carefully and watched your YouTube video, and I'd be really interested in taking on your project!
I believe I'm quite suitable for the task, since I have wide experience regarding songwriting and music mixing, and I did spend some time playing the guitar in a Country Band a few years ago.
In regards to your vocal range, I'm guessing you're a tenor. But not being sure wouldn't be an issue, since I could write the song and then adjust it to a key that suits you, so that you can sing comfortable.
I look forward to hearing from you!