parts help please - 68 w/ manual disc brakes

[68bowtie]

i've been searching on the forum, but i can't find all the details i need. so i'm hoping you guys can get me pointed in the right direction on which parts to buy.

the boring background... 68 c10 with 5-lug drive train. new factory 71-72 front disc brakes and original 12-bolt rear drums. it's got an old booster setup that i assume is from the same 71-72 donor but not sure. the brake lines are in pretty rough shape so i am looking to buy all new brake lines. while i'm at it (yes the notorious slippery slope), i plan on replacing the master as well.

i've read some posts on here that it's possible/safe to go manual disc/drum or disc/disc with no booster. i like the idea of cleaning up the engine bay so i'd like to go that route. i'd like to buy a master, prop valve, and all new brake lines that will be suitable for the disc/drum setup i have now, and ideally the parts i buy now would still work if i upgrade to rear discs later. if i have to swap the prop valve at that point that's no big deal, but i'd like the master and brake lines to work either way if it's possible.

any first hand advice you guys have (or suggested part numbers) would be appreciated. i've been shopping around for parts and it's VERY overwhelming. from what i've read, i believe i need 3/16" brake lines all around, and a 1" master. are there other criteria to look out for besides brake line diameter and master plunger size? i have no idea what to look for in a prop valve.