I use this stuff to check cameras after CLAs or running down a light leak. My experience is that the real speed is really EI 50. So you would be pushing up two stops, but my experience is also that shadows drop off very quickly even at EI 50. My thoughts are that you are not going to get the shadows (from clothing; if the models had any on) back. I would think it out but my feeling is that to give it more development time (10-20%) and then use scanned negatives and try to retrieve some shadows. I've always used the Rodinal times from the massive chart even with EI 50.
Another thought is: we a really dealing with a high contrast scene so even though I dislike Rodinal for stand, you might want to think about that. Read up on semi-stand to avoid problems.