Tim, I'm about 2 steps ahead of you. I replaced my lines because I just decided too. Glad I did. When I tried to remove the rear hose from the line that runs front to back, the line (not the hose, the hard line) just gave up and broke, kind of disintegrated. One good panic stop might have killed it.
I'm glad I decided to buy new lines.
Billy is talking me into a new bleeding tool (see other thread), but I plan on bench bleeding the MC and then gravity bleeding the rears, the fronts, then bleeding them some more.