Hey man, I kind of feel where you're coming from. I just switched to Logic + MacBook from years and years on Cubase + PC a little less than a month ago. You'll get the hang of it eventually... everything you did in FL you can do in Logic more or less. You just might have to take a different road to get to the end result and there are tons of tutorials online and even Logic's native support/help is pretty good. I'm in the same position as you, trying to figure things out that I used to be able to do with my eyes closed in Cubase
One thing I suggest you do just to make yourself more familiar is set up custom key commands. So , f you remember what the key commands were for the little things you used to do frequently in FL, edit Logic's key commands to the same ones, that way you won't have to learn new key commands and all that. There are little things in Logic, little differences with very simple solutions that took me forever how to figure out. Like in Cubase hitting the space bar would play/pause; in Logic the default is set up to go back to the beginning of a loop every time you hit the space bar. Little shit like that would annoy me and took me forever to figure out how to change lol.
But a big reason I didn't go with Cubase 7 for MacOSX , was the price (can't beat Logic's price seriously) and also I've read a lot of things about dual platform programs not working to the best of their capabilities on MacOSX.