Im a Capricorn Water Ox and he's an Aquarius Wood dragon. Is this a good match?

Probably yes. To achieve a good future, you need make great efforts. The dragon may be a little self-centered, which should be paid much attention. Otherwise, it may have negative influence upon your relationship. You are a person in pursue of cozy and happy life, so you usually bring relax atmosphere to your relationship. That is a good point.
All in all, you need better adjust to each other, especially to each other's personality. By that, a promising future will not be afar.