I would definitely suggest Merimbula as a place to raise a family. There is a choice of schools to choose from which all offer there own benefits. The winter months are a bit quiet but there is plenty to do if you like outdoor activities.
Merimbula has a typical range of shops for a regional centre so I don't think your husband would have difficulty finding a retail job unless he is looking for a specific shop.
Did you want to stay in a nursing job? The closest hospital to Merimbula is in Pambula only 9 minutes drive away, I think it is quite small so there might not be many opportunities there. If you are willing to commute further 25 minutes there is a private and public hospital in the town of Bega.