Need a parts list for a Disc brake conversion please...

Here is what I have...
1968 Plymouth Valiant 9" drums all around, no power.

I have some front end brakes from a 77 Dodge Aspen.
I plan on using the spindles from this and buying new 11.75" Rotors(bearings, seals, dustcaps) from a Cordoba, use the Aspen calipers as cores for new ones.
So I need the "larger" caliper brackets as well.

What about flex lines?

I still need 73+ UCA's correct?

Need a proportioning valve.

Need a new master cylinder. (I have a booster and master cyl from the Aspen I think, can I take off the master cyl. and just use it?

Do I need to get new lower 73+ LBJ's?

I also plan on buying a 8 1/4" diff for the rear to match the bolt pattern.

Am I missing anything?