If by saying "all" you are including the front lines as well, you are in for a BIG job. I replaced the rear lines starting from roughly the B pillar all the way back to the rear wheels. Even with the whole rear end elevated, it wasn't too easy to bend the lines. I do think a lift would have made this substantially easier though. But when it comes to the front lines, it would be quite a magic trick to bend the lines around all of the obstructions under the hood. No one sells pre-bent lines, taking them from a used [junker] car is definately not a good option, and it'* rather difficult if not impossible to free form new lines to duplicate the bends when the old lines are removed from the vehicle.
I would have the front lines throughly inspected but would not replace them if it is not necessary.