Hola!

My family and I dream of living in Spain, but we are in need of the sound, practical advice of other families who have successfully undertaken this move. We are all four US citizens, with the exception of my older child who was born in Menorca in 1992 to a Spanish father (now incommunicado), and who, presumably, possesses Spanish citizenship as well as US citizenship.
I am a Spanish teacher who (obviously) has lived in Spain in the past. I have also done my graduate studies in Spain (Universidad de Alcala de Henares, Madrid).
My husband does not speak Spanish, but he will learn for functional purposes. He is, however, a sommelier (1st level) who has worked extensively in the wine industry and knows wines from around the world quite fluently.
Our second child is almost 9.
I am thinking I could--yep, you got it--teach English, but am not sure what certifications/accreditations any Spanish institute would prefer/require.
I have lived in Menorca, Barcelona, Fuerteventura, Madrid (Alcala de Henares) and Asturias (Cangas de Onis), but I am also looking for information on which region/city would be the most viable for an American family looking for work and affordable housing (please, try to quell your laughter...).
I have submitted this question "to the expert", but never received a reply, so I'm putting it out there to the REAL experts, the folks who've actually done it!
Thanking you in advance,

Jessica

El Instituto Cervantes, in conjunction with the Ministerio de Educacion y Ciencia, is offering the opportunity for US and Canadian teachers of Spanish to receive their Masters Degree in Education from Spanish universities (Salamanca, Alcala de Henares y mas). The program looks fantastic, and I'm looking for teachers who are currently enrolled in order to hear about their experiences, as well as offer any tips or advice, since I'm very seriously considering the program.
I've lived in Spain before (4 years) and I'm fluent (I teach Spanish at the secondary level).
Anyone?