The first question is what will the charges be - the charge will be what sets the range for sentencing. I haven't looked at the statutes but read that there is a lesser charge of vehicular manslaughter that could allow Ruggs to avoid jail time under the right circumstances. Based on his speed and BAC, I have a hard time believing that the prosecutors would elect to do that.
I'm not sure what the more aggravated charges are - some states have statutes that are pretty tough on DUI fatalities.