Did you actually try and use the New Touch Wiz that comes with the phone? It is better than Nova Launcher. Loads faster, you can do many of the customizations there: including desktop grid, sorting icons, and hiding the news feed page. There is a lot less bloatware.
I'm new to android and I have the s7 edge. I'd love to see a full on tutorial of Nova launcher and their premium version on the Google play store for the s7 edge. I love the clean, crisp look of Nova launcher and the customization, but I find myself lost all of the time and I don't know how to get my apps to where I want them and simple stuff like that. great video though!