Sounds like a great find for you. I have one that I've passed on to my son but it is a great riding bike and I put about 13,000 miles on it from general riding, touring and trails. It isn't the lightest bike but has a sweet comfortable ride and is reasonably responsive. They had pretty nice components for their day and the Bridgestone SC brakes are nice.
A classic Japanese bike that I'm sure you will enjoy for many miles.