Unless you're racing one-design, I don't see the point in buying a H16. It was an OK design in the '60s, but is an extremely poor design compared to any other design from '80 onward. My first boat was a H16 because I could find them cheap, but I wouldn't buy another one.
Your girlfriend won't like pitchpoling in those cold waters, and this is just about what the H16 does best.