I did a similar thing to drewbags, my break in procedure was:

1 - Put DL in airframe.
2 - Run one tanks through to make sure it wasnt going to stop.
3 - Fly aircraft.

My prop for 'break in' was a 23 x 8 mejzlik which is my normal flying prop, i think you guys are over complicating the matter of running in, get it in the air!

Cheers

W