[MAG]

"how would you describe the brake performance?"
My description is "very typical" for Model A's that need the brakes rebuilt.
That performance is what gave the Model A it's reputation of poor/bad brakes.
To fix the problem will require rebuilding the brake system. As others will comment, a properly restored brake system will stop the Model A properly and safely. If you do not know how to do this, please get some help. Books, videos, etc., are available to help you get the job done yourself. If you choose not to attempt it find someone that knows how to do it.
I will add that there are no short cuts or band aids. A total rebuild is the best way to correct the problem.