There are several spa associations - you would probably want to visit those first to see what information they offer.

But before you begin anything - you would want to do some market research - how many other spas do you have in your area? who would be your clientele? why would they come to your spa as as apposed to one of the other spas in your area or in CA? etc.

With what you're describing you definitely be a high end spa (you would have to be because of the costs). But that would require some significant investment capital - building, employees, products, etc. Where would you get the money? If you're looking for an investor you would need to provide that person/organization with the market research information so you'll need to do it anyway - so do that first so you can determine whether or not it is feasible.

The other thing you may consider is working at a spa in your area for a few months just to learn the industry.