I don't see the need to mix the Redline breakin, with the 10W40, with the Joe Gibbs.
With 15+ pulls on the pump, it's certainly broken in at this point...but I think in his situation, he had about 4 quarts of Joe Gibbs leftover from the dyno and he wanted to just go ahead and use the rest of it. I think it would be perfectly fine to go ahead and run that with the Rotella he has...then just switch to all non-
synthetic on the next
oil change.