and post a pic of how the lines are crushed. Then it can be seen if straightening is doable without cracking them in the process. Easier to do that 1st than replace the lines which is $$$ and labor.
Jacks are ok for changing tires that is why they were put in the car. Get some ramps rather that jacking to inspect underside and do work there. They make ramps with a lower slope lead section so the low front Z can get on the ramp. If you ramp it put emergency brake on and put in gear or park and chock the rear wheels for Xtra security. Driving up ramps with a manual requires some caution so you don't over shoot the ramp.