Stay away from exhaust! Hot is bad! That is key.
Length is not an issue. Use a bender for all the tighter bends, you hands can make gentler bends. If you kink it, scrap it. Do NOT use compression fittings. Buy a roll of tubing and tube nuts, don’t piece it together from lengths from the parts store.
Use clamps to secure the lines. The best are the rubber lined ones but the factory just used metal on metal. Metal lines don’t flex, rubber lines do. Leave a little extra tube at the ends.
Typical is 3/16 lines all around. Every flare should be a double flare. Buy or rent a quality tool. Practice on scrap tube. Try not to forget the tube nut before you flare.
There may be general kits available from Speedway Motors, CJ pony parts, and others. Many others
Search for videos on making brake lines, good luck