Clarification on brake set-up

I've been doing lots of research on converting to front disc brakes on a 68 barracuda that originally had 4 wheel drums and drew a picture of what I think it should look like. I just turned 20 and don't have the experience most of you guys do so if there is somthing wrong, please let me know!!! I don't have the original 4 wheel drum master so I cannot take the RPV out of that and install it in the new master, hence the RPV being added into the brake line after the master but before the distribution block. I've heard you can and cannot use this 4 wheel drum distribution block with front discs so an answer for that would be awesome, as well as where to put the adjustable proprioning valve (I think after the distribution block) already installed the brakes , just not the master or the other valves. This is also the 73+ discs and 11x2 drums in the rear. thanks guys!

image.jpeg