At least your husband has one thing that i, or possibly quite a few as us on here, has not got and thats a wife/missus who shows an interest in achieving his ambition. My missus still thinks i'm living in a dream and its never going to happen and she knows naff all about the aviation industry. Perhaps she will when she gets wind of the re-mortgage but thats beside the point
. My point is if he knows the industry and your there to help him and support him his time will come and it'll all be worth it. Read of some sucess stories on here and you'll see its possible.
Good luck