I went to NAPA and got all the right parts for only a few dollars. I did a ton of research before hand. I ended up buying all new fittings and making my own brake lines from the master cylinder to the brake lines on the body. If you have never flared brake lines, get a quality flare kit and read, read, read....then practice, practice, practice. It isn't brain surgery, but you do need to get it right.
If I was in your shoes, I would probably just get one of the kits. I had access to a decent flaring kit.
Joe