France to Italy

Good Evening, 

My husband is French and I am American. We are currently living in France. We will be moving to Belgium for family reasons. However, I am confused as to the process. My husband will be unemployed upon arrival (speaks French and Dutch fluently though and has a degree in banking). I understand we would need to prove that we have sufficient funds upon arrival? How much is sufficient? Things seem quite vague. Can we both register at the commune at the same time considering he is an EU citizen? How long will it take before I can start looking for work (I speak fluent French) ? Do I have to wait until he has found work in order to have the right to work?

Anybody with experience in this area?