I would like to encourage you to do that. However, expect a lot of work, time, energy and effort you will have to put in it, and don't expect that you will be repaid for the same within a short time. Consider it a "work of love" and wait and see what the outcome will be.

The more I think about it, the more interested I've become in developing online materials for classroom or self-study use. It seems there is still a need for quality online materials out there.