You can import from touchwiz to Nova, but i think the issue you're going to run into is getting your setup from Nova back to touchwiz, I can't think of a way to do that. OP are you using touchwiz? Also you have to recreate any widgets you're using, those do not import. You only get a placeholder of the grid size the widget was occupying
You could probably fly through the setup pretty fast if you just keep your old phone as reference, im pretty sure touchwiz lets you bulk select apps to put into folders. As far as app drawer goes, i think you just have to go in there and spend some time re-doing that :/