Need help routing brake lines to master cyclinder

[Bearcamp]

The single master is going but how should I run the lines with disc brakes up front, drum in the rear? I have a power booster off a 1972 with the proportioning valve. I need to know on the dual cylinder which is front and back and how they connect to the proportioning valve and from there where which goes to front and back. I thought it was front of cylinder to front and rear of cylinder to rear but the proportioning valve has me screwed up too.