Having 'been there, done that' concerning power brakes on a blown '32 you don't have enough vacuum to opertae the brakes properly. So the bandaid is to get an electric vacuum pump - it'll sit right behind the drivers' seat and drive you about nuts every time you touch the brake pedal. And, no, adding a resevoir to the electric pump will make no difference - it would if you had a 'window' switch for vacuum pressure that would act similiar to a thermostat but i can't find one.
Stopping while cruising is easy - get some 4piston front calipers and you are good to go, it is stopping while pulling out of a parking lot etc where power brakes will fail you because of the vacuum. In brief get your manual working right - easy to do, give wilwood a call and they will tell you exactly what to do.
Do not take your car to another shop for an 'assesment' they will pick it apart, give you nightmares and run down the folks that built you the car. In an earlier post i said you were going thru the 'new car blues' and taking it to another shop for an assesment will just add problems without resolving one single thing. I will predict that for the next 2 years you will be doing and redoing what you have befor you are 'satisfied' - that is the process of 'getting there'.