Need advice on developing my own dance fitness program
Daniel is right that there are tons of new things in the mix at any time. There is big profit in having a trademarked program so lots of people shoot for it.
That does not mean one should give up, but it does mean that you will need not just a good program, but to be able to interest someone in that program. It is kind of like applying to college. You could have near perfect SATs, an A average, and lots of extracurriculars, but, well, if you want to get into the top school you will be going up against a whole lot of people in the same state.
To whom you pitch will depend on a number of factors. Given that you will want to keep some of the information of what your program entails private it is hard to make specific recommendations. Generally, if your style is geared to an age group you would look for companies who market to that age range. If there is an association with a particular sport you could look for companies that would have a possibility for co branding. Who stands to make money from an association with you, and enough money to make it worth their venture capitol.
You also want to ask yourself how much control you want to give to someone else, if you do want to try for help. You could also try kickstarter.
Before planning strategies of to whom you will pitch I would suggest making sure your pitch is really honed. Make sure all of your correspondence is grammatically correct, professionally worded, and sent to the correct person on staff. Have a power outfit for any interviews, and all of your materials organized for meetings. Practice your pitch with friends so you will be ready for any questions.
Hard data on the popularity of your class in a smaller market will mean a lot. So you might want to start teaching in a few local places and collect data on your numbers to show how hot you are.
Good luck