Naples it's the most beautiful place on earth, you've seen it. The life is quite inexpensive, the food is sublime, inhabitant are extremely warm-hearted (not all of them, like in every other part of the world, that should be clear). There are a lot of problems, too, I guess you're aware of them. Economy and job market is stagnating since 40 years, political (or not) corruption it's a big issue, and you have to be prepared to fight for a lot of rights that in the rest of the occidental world are so obviously guaranteed that people forget to have them.
I think that if you're really -really - open minded, know well language and how to treat people, and ready to stand against a sea of minor troubles, you'll live here the best part of your life. Otherwise it could be a hell.
Tourism and catering are the only engines that move the economy in Naples, so - today - there is space in the market for your husband, I guess, but that's not my field.
The only thing that i know is that the Italian couisine overseas it's someting totally different from the italian couisin in Italy, and Naples it's the capital of it. So, pay attention to this.
Contact me if you need any help.
Have a nice day,