Hi Joan,
How bizarre, I was literally looking at ChoiceScript yesterday, and playing "Choice of the Dragon".
Anyway, a short introduction: I have over a decade of experience in writing and editing in a professional environment. I've worked as a senior editor on various platforms, including newspapers, magazines, books, websites, blogs, newsletters, advertising and more. I am currently the director of my own company, that provides editorial services.
For your project: I'm sure I can quickly learn ChoiceScript - I've got a solid foundation of HTML and CSS, and coding comes quite easy to me, even though I don't work in the field.
100k words is a lot to write, especially if this project is set to be unique creative content, hence my bid (which is still a lot lower than I usually charge for writing jobs, but I'm curios).
Give me some more details on the project, and let's talk!