Thanks for all the input! This community has been a real resource for me and my wife getting more serious about the sport. We have purchased two boats and received lots of advice via lurking.
1) I am not a crack addict,
. I have a crazy metabolism and always have. My grandfather is 73 and he is still tall and skinny just like me... I will however be accepting free sandwiches.
2) The initial idea of having a boat that would be stable and friendly for my wife and yet allow me to do some mild creeking was actually suggested by my wife.
3)In the end I left the decision up to her as to which boat she got. We tried out several different boats including the mamba 8, hero, burn M, remix 59, 2fun, fun, and the little hero. We would have tried a punk rocker but couldn't find one. We were also told the cockpit might be a little short for my leggy wife anyway.
The final decision she made was on a slightly pink and black swirled hero. She felt the most comfortable in the fun, but the most stable in the hero. The boat will see mostly mild class III for her and then the occasional self-support trip, park and huck, and a little class IV creeking for me.
My wife's final words before we got the pink one were, "now when you take it out you can get more in touch with your feminine side."