I would definitely provide plain water as an option. Chick starter (feed) is designed to contain all the nutrients the chicks need, so they are fine with just that and plain water.
I have no personal experience with quick chick. I've raised hundreds of chicks, over quite a few years, and never given them anything to drink but plain water. They tended to stay healthy and grow up just fine. So personally, I would not be using the quick chick. But I know that plenty of people do use it and their chicks grow up healthy too, so I would say your chicks should be fine whichever way you choose (assuming they also have access to plain water.)