Please read the Stop the Thyroid Madness website - some of your fatigue and depression may be inadequate thyroid treatment.
If you can't get the house ready for sale on your own, declare a work party weekend, get your H and the kids over there to help knock it out.
As for the name - I kept my married name, since it is the same as my kids and also has been my professional name for 20+ years. It was nice not to have to deal with changing it on a bunch of stuff. Does seem a little weird, explaining it to dates, but other than that, I'm glad I kept it.
