I'd probably work on all your stuff. Your house is huge if I remember? Mine is 1200 feet. The kitchen is right next to the Master. We probably spread more virus cooped up in our tiny rooms than you do moving around the house, wearing a mask, while not around others. You could think of it this way too. Since you aren't overly concerned about the other kids getting it (I think you said that you feel like it is a bit inevitable?) then the bigger concern might be continuing to be a potential positive contact. At least in my area that requires being unmasked and within close proximity for more than 15 minutes. If you can avoid doing that (and it sounds like you can) and you feel good I'd personally carry on.
My advice would be different if we were still pre-vaccine, or if I had high risk people in my household.