Freelancers -- where do you find most of your work?

Thanks to Holly, Bruce, Daniel and all the others who contribute to this thread. 

I am also a freelance consultant, and my specialty is industrial energy efficiency. I was able to put together a 90 minute course with quizzes, activities etc. with the help of a talented assistant and a professional audio engineer.  

Now I need to get it "out there" - but how? Given the scale of my business and the niche I work in I would consider the course wildly successful if I sold 200 seats at $50 a pop over the course of a year. Should I

1. Buy an LMS and host it myself?

There are a dizzying number of LMS software packages available, but at my scale would it be cost effective to spend thousands more on an LMS package, shopping cart, username, login, etc. to upgrade my website to handle it all?

2. Hire a service to host it for me?

There also now seem to be quite a few providers who would host, but there is a huge range of quality, cost and capability.   I have been in negotiations with some online training providers and settled on one called bizvision, but we are having difficulties actually getting the modules to run.  Do you have a reliable provider you would recommend?

Any advice here on the forum or privately posted to my wall would be appreciated.  Thanks in advance.