Converting to disks: Tell me if I left anything out.

Do you have the backing plates (dust shield)? The granada ones I have are two piece with a plastic air scoop on them.

You need flex lines as well as hard lines. I'm not sure if you have both from your post. You will need to change the point where the flex line mounts to the car.

I expect you will also need upper and lower ball joints and tie rod ends. It's difficult to salvage them, unless you have nearly new parts currently. I recommend Moog.

Check the brake travel and the brake pushrod in comparison to the MC maximum travel before you install everything. I'm not sure whether it's a problem or not. I did a manual to manual swap in my '70 and everything matched up.

That's all I can think of. Good luck.