That’s a really neat bike. Congrats on the cool score! I always liked the red polka dot look, but not being much of a climber myself, I’d be out of place in a KOM Jersey. That bike on the other hand, I’d be glad to ride.

Do keep working on those brakes. They’re not always ineffective. I have those same Chorus monoplaners on my Look and they stop well. I can easily lock up the rear, and I’m using original pads. Try sanding off a little with a file to expose some fresh rubber. And double check the quick release at the lever isn’t open. Mine tend to stop better when adjusted fairly close to the rims (though they look fairly close already in the photos).