Icristler, I'm curious about the first line of your post which says, "We have finally made our minds up and yes we are taking the plunge and joining EK this summer. Its a 5 year plan and I'm ready for it." (My emphasis)
I presume the "we" includes your wife- is she ready for the 5 year plan or is it just you? It sounds trivial but trust me this stuff really matters. I hope your wife came with you for the interview and has some idea what she is committing to for the next five years. How happy the family is depends a lot on personal circumstances and what kind of mood the accommodation department are in when you arrive, but it also has a huge impact on how happy you are.