KHON2 news reported that the Louis Kealoha pre-sentencing report was filed but is not being made public, and his lawyer isn't releasing the terms.
Based on the federal court's system of "points", each strike against a defendant found guilty is assessed points for each facet of their crimes. Katherine's points are why the 10-14 year estimate exists. His points, as well as those of the 2 Cops being sentences in Oct, are fewer, but still represent significant prison time. So, those same people giving estimates think he'll get close, but fewer, years as his wife.
The judge also has discretion in sentencing within guidelines, but this specific judge is not known for being lenient.
Remember, this is just the first in a string of prosecutions for "Honolulu's Power Couple."