If that is weird then the Someday Quilts mystery novel by Claire O'Donohue is also weird. In her series about the Someday Quilt shop, the owner Eleanor has an old Victorian house. The sewing room in Eleanor's house is actually the master bedroom because it is the largest. Makes sense to me, but I'm a quilter and realize that space for the stash and machines needs to be huge!!!
Since you have the say so and you are not inconveienced in anyway, but actually would benefit from the change, I say go for it! Get help to move the the long arm-- do you have cute, muscular young man nearby that could help?