Unless there is something wrong with the original brake lines, braided stainless is mainly bling.
Bleeding all the air out of the master cylinder is a sloooooow job. The bleed nipple that Blair (svracingparts.com) sells for this is a help. Otherwise, follow instructions, bleed, bleed again, again, again, again, etc. Clamp the lever down overnight and let the last bubbles find their way out. If you let the master cylinder reservoir brake fluid level get too low and more air gets in, you get to start all over.
Bleeding all the air out of the master cylinder is a sloooooow job. The bleed nipple that Blair (svracingparts.com) sells for this is a help. Otherwise, follow instructions, bleed, bleed again, again, again, again, etc. Clamp the lever down overnight and let the last bubbles find their way out. If you let the master cylinder reservoir brake fluid level get too low and more air gets in, you get to start all over.