lots2do... I'm sorry for you and your DH's loss...
As far as your sewing room switch... I did it and am so glad I did.. I had the small 4th bedroom...but most of it spilled out into the family room.. cutting table, fabric, etc. I just didn't have the room in there for everything. I had been contemplating moving into the family room and just having the whole thing, but compromised into splitting it in half.. I have a little over half and the other side is for sitting, lounging, etc...
About a week after I moved into my new space, our water heater decided to die..which was in my sewing room. Thank the Lord for giving me the idea to move my stuff the week before, for had I not, I would've lost some fabric, machines, 2 laptops., etc, instead of just carpet and the annoyance of cleaning up.