Plumbing Adj. Prop. Valve for Rear Disc Swap

[dznucks]

I am gearing up for a rear end swap that includes a rear disc conversion. I am using the caddy brake setup with CaptFab's brackets. I am running wide tires in the rear and want to run a Wilwood adjustable proportioning valve.

The stock master cylinder has a single 3/8-24 port for the front and the rear is larger line size. I have two questions regarding how to plumb this new valve in, as it has all 3/8-24 ports and two ports for the front.

Is this valve usable with my current setup without completely redoing the lines all the way to the discs?

Can the 2nd front port be plugged?

I'm am also curious about reducing the larger rear lines into the smaller port diameter. Will this hinder flow? or do discs require less fluid to operate?

Should i just get a regular disc-disc prop valve?