Love your work mate.
i also have Quarq and Enve wheels too but i ride a focus. I think you should certainly have a crack at racing. It really improves your overall ability (bike handling) + top end fitness, with attacks and surging and all sorts of tactics.... its great fun (but also very hard)
I'm being encouraged to get my racing license and ride the Tuesday crits at Victoria Park. I can absolutely see the merit in doing so for the exact reasons you mention. I've been pretty fortunate in that I've been able to ride socially with some really high quality guys who really push me and have instilled really good habits from day one.
Which ENVE's do you ride? 3.4's? Do you mostly ride hills? I'd be keen to go for a spin sometime if you're keen.