I'm not too concerned about stiffness; I rarely see steep bankings, I'm an enduro and my race weight is at most 155, at the moment I'm maybe 147. I have ~80mm wheels now and they're great, but they do feel like sails when it's windy. I figured that they could replace them as sort of workhorse race day wheels, then I'd put a disc on the back for bigger events.
Do you ever run them as a set or just as a spoke/disc combo?