What else do I need besides the water line kit to convert the water cup feed? Water pump? Hose?

You would need either a submersible pump with tubing if you're going to use a bucket with water, or our tubing kit with the connection for hose pipe connector if you're going to use a garden hose.

https://www.hisglassworks.com/6-foot-1-4-inch-tubing-kit-push-connect-adaptor-and-hose-adaptor-html.html