Brake Advice

I'm getting ready to run all new brake lines in a 73 Dart Swinger. I have front and rear disc on a 8 3/4 rear. Looks like Dr. Diff has everything I need, or I could just make the lines myself. Any tips or things to be aware of before doing this? Thank you in advance.

I have made several sets of brake lines, and I have used several sets of pre-made lines. If you do make your own, I agree with @MoparLeo when he says to avoid SS lines if making your own. I have used pre-made SS lines with no leaks. I also agree with @dano when he says what is your time worth, what is your skill level and do you have the right tools? Take a hard look at those before you make up your mind?
On a lighter note, if you do make your own lines, make sure you put the line nut on before crimping the flare. Ask me how I know that. LOL