I recently switched to a mac and had to find a way to get fl studio on it. They just released a beta version of mac which I tried out and was happy with apart from the fact that I couldn't install more complicated vsts.
So I'd try that first and if that doesn't work for you then you might have to get windows on your mac using bootcamp which is what I did. The only problem is that it was a bit of a complicated process and you will need to buy a copy of windows 8.