Thinking of getting another master cylinder

[Dino]

Now that the car needs a bit more attention I figured I might as well make it worse and tackle another project.   

I have this old kit that came with the car, didn't cost me a dime so I'm going to use it.  I can upgrade to bigger brakes later but this should be okay for now.

http://www.wilwood.com/BrakeKits/BrakeKitsProdFront.aspx?itemno=140-2721-B

It's originally a power 4 drum car and I'm keeping the rear drums and the booster.  I know it's not a double diaphram but in theory it should work.  For a master cylinder I have the Raybestos MC 36283 which has a 1 1/8" bore diameter.  Because the calipers have 4 pistons, the bore may be a bit much, even with a booster.  Should I get another master just in case?  I know the 73-75 Dart MC is pretty popular, 10-1571 which should be just under 1" bore diameter.