It's a great idea but I think you aren't the first one to do it, so I worry you might find there is a lot of competition by the time you get started. I can't remember the name of the others, but there is a big one from Japan called Patron that already raised like $10 million this year, and they already have a huge following (plus some related products).

It may be that you could still launch, after all competition is good, but you have to really be unique in this sector with others coming earlier!