Break in miles on what? Go out and beat on it. Total seal recommends that you go straight to racing on new rings to make sure they break in properly.
To each his own I guess. My engines get assembled and go straight to making wide open blasts, given the tune is good of course. Same with my transmissions and differentials. A couple runs through the gears and make sure it shifts, then let it rip.
If you survived the dyno time, there’s nothing you’ll do on the street that’ll blow it up.