I don't think this is workable.
First: I don't want to study in a group. I want private lessons. (But honestly, your idea wouldn't work even if I wanted group lessons.)
Second, if the trainer works at a studio, he's likely bound by a non-compete while working there. The studio could not only fire them but also seize any earnings obtained in violation of the no compete.
Even if they are not under a non-compete, the studio can fire them for teaching outside the studio. So I wouldn't be able to hire a trainer who works at that studio to come give me private lessons or organize a regular 2 hour group lesson.
Third: the entire problem is in some parts of the country, the are very few to no independent trainers. The reason is there are insufficient number of clients. So the only trainers around work for the only studio around. If independent trainers existed (as they do in the Chicago area), I would have no difficulty.
I think you are in Europe. I suspect you truly don't grasp the idea of "living in the middle of nowhere" because Europeans often don't grasp that. There is a lot of "middle of nowhere" in the US. But if I were to even get as far away from Chicago as, say "Morris, Il", I would likely have a difficult time getting a good teacher who taught the dance style I want to learn within a 1-2 hour drive of my home.