I can't answer the sedantary question but it does sound like there is something inside of you telling to be concerned about telling your husband. Respecting feelings is something I have learned to honor....one way to tell him is to do all that you need to do to move (have it done or all ready to go) and then tell him.
Are you afraid that he will go into a rage/become abusive or become sweet and talk you out of it? I know that there are so many "parts in me" that all want different things and different results. It's really hard to sort them out....sometimes the "part" that wants to zone out steps him and I immobilize.
You have made so many firm steps....telling other people what I am doing has kept me "honest" (ie doing what I have planned). There are parts of me that want to erase all of my plans and stay right were I am....it's a known quantity and the move means stepping out into the vast unknown....it's scary.
Sending you hugs and warm thoughts.