We incubate at 88.5 degrees and cut both of our clutches at day 55 and 56. Our last clutch ended up being very healthy, so we figured it was safe.
Good luck with you getting some Mojo girls too! I would love to work with the special/mystic gene at some point. We have a neet dinker that we will be breeding to a Mojo down the road, so a few more girls would be nice.