Hello, Amelia. It sounds like you and I have a bit in common as far as plans to use moodle professionally, learning moodle for a few months now, and having a background in teaching (32 years of mostly high school math). You asked for feedback so here goes: I think your approach of offering a free service by yourself is problematic, because of the self-motivation factor. I'm getting bogged-down in my plans, and I think it's because I am going it alone so far.
It's been a few weeks since your post. How's it going? Do you have a moodle site online? I have one on Godaddy, but havn't used it for teaching/tutoring yet.
Mark