I think that may be a winner! I hope they all are winners for you! I have never considered disinfecting hatching eggs! I just pick clean looking or brush them off a bit with a scrubby pad.
Let's call the chick "Hope" as I am hopeful!
I have frequent power interruptions usually just a few minutes, usually less than 30 minutes and occurring during incubations too. Not a problem if the duration is not too long evidently.