I am working on a fitment list for custom XRP lines that will work on any 5th gen Legacy. It has taken a little longer than I had hoped because work is busy, but it will be worth the wait. Keep an eye out for my DIY step-by-step in a few weeks, it will include what to order and how to install. Will cost about $150 and you will have racecar quality stuff.
Yes, go with ATE super blue, and if you want lines ASAP, the Mach V ones will work on your 2.5i. Acumenhokie has them on his car.