Norelma,
Opening a Studio is a risky proposition. The majority of new studios fail in the first year. I have a friend who invested her entire retirement, (401K) in a place to dance, she has now found that the Zoning is not what she was told it was. She will likely lose everything.
There are a hundred roadblocks in opening a new studio.
I would suggest that you Contact "Roundalab" Or "URDC".
They are Round Dance organizations. They do ballroom Dancing, but they use cues to tell the dancer what to do. (Much like you would do in a lesson.)
Either of these two organizations would be glad to help you get a Round Dance Group started. They welcome anyone who is willing to teach. (No certification is needed.)
Dancing is done in Schools and Churchs. (Or anywhere you can get a cheap or free hall.) They will give you Cue Sheets, (Choreographed Dances that fit spacific music.), and they will give, (Or sell cheaply), figure discriptions.
The thing is that they are very lose in their rules. You can teach whatever you wish, in whatever fashion you wish.
You can write your own routines, or you can teach Routines that are being done all over the world. You can teach the old American Two Step, (From over a hundred years ago.), or you can teach Quickstep and Bolaro.
In effect, you would be the "Dance Master".
The draw back is that you will not make a lot of money. Round Dance Leaders differ from other dance instructors in that they teach for the love of the dance. Their objective is only to share the dancing they love with everyone.
If you give me your E-mail address, I will forward it to them.
Michael