I would just make new brake lines. Get new hard brake lines. And some fittings. Put the fittings on the end of the line and use a flaring tool like this to flare the end of the line.
Then to bend the tube you need a bender like one of these:
What you have to keep in mind is all these fittings on your jeep are different sizes. They do that so that when you are replacing a part such as the master cylinder they don't want you to accidental connect the front brakes where the rear should be.
To make sure you get the correct sizes bring the proportioning valve to the parts store. You will also want to compare the master cylinder fittings so when you get to the store you have a good idea what size those are.