A DUI or DWI cannot be waived to Superior Court unless it has been charged as a felony. If it was charged as a misdemeanor the case would have to be disposed of at the district court level before it could be appealed to Superior Court. If you can hire an attorney to continue the case that would be your best bet.
If you husband is being held on an ICE or immigration bond, then he/you needs to speak with an immigration lawyer as soon as possible. Our firm handles DWI cases as well as ICE bonds, but more complex immigration matters may require an immigration attorney. Call a lawyer ASAP.
Here in Asheville the jail time is going to be hard to determine without looking at the case further, but there is a possibility you could avoid jail time altogether. The bigger impact is the further loss of driving suspensions. Contact a good attorney to minimize the criminal and driving impact of these DWLR tickets.
You need local counsel on this immediately. The DA's Office could potentially proceed with the charge under the appreciable impairment prong of the statute, which would mean that they could look to establish impairment by means other than a chemical test. They could also potentially seek to use an expert to show that your BAC level was higher at the time of the stop than at the time of the chemical test. Consult with an attorney immediately.