97 dodge dakota 4x4 wheel cylinders?

Hi the short story is i just picked up a dodge dakota 4x4 ext. 318 with about 150k the brake pedal traveled all the way to the floor so i took the drums apart and discovered the wheel cylinders were leaking there was goop all over so i am in process of replacing wheel cylinders drums and shoes but having trouble getting brake line off cylinder i have tried heating it up almost cherry red, using penetrating oil, and even got the metal line flare wrenches and all it does is round off more on the hex my question is would it be a totally bad idea to just cut the line from cylinder to proportion valve and using the special socket for rounded hex heads to remove from the valve and replace the line, cylinder, shoes, and drums? wont matter how much i spend on this project as long as its all fixed in the end. i have exhausted all my other options and don't really wanna do that since lines are still very solid but its frustrating if anyone has any other ideas its appreciated