Interesting... I have loved my 63cm 1995 Bianchi Veloce road bike with Dedacciai Zero Uno tubing which rides great for my size - but is not exceptionally light. "Deddi Zero Uno - Heavier gauge set designed for exceptionally sturdy frames. Large selection of round tubes." - I guess, I want a well crafted steel frame that is lighter than a Surly Cross Check. Being almost 40 yrs old - I appreciate the "give" of steel over aluminum; but I could be wrong - especially for a race bike.
At your weight the last thing I'd want from a steel bike is low weight. You'll need something strong. If you want strong and light steel is probably your worst choice in frame material. Have you tried any modern aluminum frames? I have two scandium bikes that blow away my previous steel frames. They're much lighter and stiffer and have a smoother ride.
If you really want steel and have the bucks any custom builder could build you something "light" but I bet they try to steer you away from that idea.