I have manual disc/disc brakes on my '34, using a Corvette manual disc/disc master cylinder w/ 1-1/8" bore and an Allstar Performance adjustable proportioning valve. I didn't have room for a power brake booster, but the car stops just fine. Based on that, I suspect that your choice would work OK. However, you might want to consider a 1-1/8" bore. It has a 27% hydraulic advantage over a 1" bore. The previous master cylinder on my '34 had a 1" bore, and the 1-1/8" bore feels significantly better.

I used a Right Stuff Detailing master cylinder - part # DBMC05C.