I hope someone can point me in the right direction?

just use your old lines like you said.(I plan to cut my old lines from the other master cylinder and hook them up and run them back to the reservoir to try this way to bleed it) thats bench bleeding, only that you will be doing this in the car. just make sure you dont slam the pedle down as this will make a big mess. you can also try to let it gravity bleed as a last reort. just open up all the bleeders and make sure you dont let the resivoir go empty. if I can get some pictures of my car I will post them for you thats the color of mine 1970