Having read through your brief, I believe I'd be an excellent candidate to work with you on this project.
Although not a career writer, I've been a Digital Project Manager for the last few years, working on leading the design and development of CMS (Joomla and Wordpress) based websites, e-commerce websites and bespoke web applications. Throughout my time as a Digital Project Manager, I've either been solely responsible for the creation of content, or an editor for work that has been created by other copywriters.
I'm extremely adaptable, and understand the need to adjust writing tone in order to portray character. With my experience in digital, I could happily follow any videos you post and create relevant and engaging blog posts.
I'm happy to do a test run in order to prove competency in this task.