I thought they were coming in the form of codes??
He is talking about his current digital purchases, not the zelda game.
And the answer is yes you can sync the new pad with an old wii u. And you should since there is absolutely no way to transfer data from wii u to wii u. Keep your current system and sell the new system and old pad
And a good economy case is te nerf armor. Had it almost a year now. Screen protector is 10 bucks for a wii u branded one and ones with extra stylus (3 or 4) I think.