New to Mix-and-Match Brake Systems

[steve aleve]

I am new to creating my own mix-n-match brake system and I wanted to see if I could get help from the pro's out there. I am actually pretty new to brakes in general!!! I have an AD that is going on an S10 frame. I have the stock s10 disc setup up front, a s10 blazer rear axle with discs, and a hydroboost from a mid 90's astro. I have the hydroboost hooked up and most of the lines that run along the s10 frame are there. I just need to connect the 3 lines (rear axle line, DS front line and PS front line) to the hydroboost. My question is mainly in regards to compatibility and selection of a proportioning valve. Does it make the most sense to use the proportioning valve off of the blazer so that the 4W disc setup is fed the same as it was originally intended? Hope this makes sense.

s10 discs up front
blazer discs in rear
astro hydroboost with stock MC etc.
______ proportioning valve

Thanks!