The Pista is already a relatively lightweight steel frame, classic. Designed for the street equally to the track. The super pista being aluminum might shave a lb. overall but your wheelset is like 7 lbs! That's rotating mass. You complain about climbing but you have 43mm deep aluminum rims that weigh 800-900grams each on top of the hubs, spokes. If you want a climbing rig, then get gears. If you want to suffer, then you're in the right place with your setup, losing a lb. on the frame for its stiff and what some would say, jarring, ride quality puts your bike total even worse than it begins with.