Beat the game, now I'm sad it's over. I wish Zero was able to be released before the Cold Steel port but I am happy to get more sooner rather than later.
Also, does CS spoil a lot from Zero?
No, CS spoils nothing from Zero. It does spoil some stuff from Ao, but Ao spoils about equally as much from CS/CS2, so it's fine to play CS/2 first if you don't want to wait for a localization or for the fan translation to be finished.