X2 on what they said.

It's the opportune time to upgrade to Stainless Steel brake lines & a GOOD brake job. The SS brake lines are probably going to be cheaper than OEM so that's a no-brainer. You'll lose all of your brake fluid during the install of new lines ... but that's a good thing. If your brake lines have been compromised, the fluid may be contaminated. Just be fore-warned, bleeding your brakes after refilling is CRITICAL and difficult by yourself. Plan on having a helper available for that part. While you are in the process of replacing the pads, you'll see what parts have to be able to slide & which ones are stationary. Anything that slides should be cleaned and lubricated.

If your rotor is scored & is too far gone to just be turned, you may want to check into cross drilled rotors. Rumor has it that it can improve the braking performance (I'm still running the original rotors so I can't verify that for you).

There are plenty of threads on SS brake lines & cross drilled rotors so use the search function on the home page to find them. It'll help save you quite a bit of on line research trying to source parts. Additionally, the better informed you are, the better you'll be able to work with your mechanic in the future to diagnose the issue.