The ideal option is a second bike, have that all dressed up with studs ready to go. Alternatively next best is the spare wheels.
The first season I ran studs, I did put them on when the first frost was forecast and left them on til March. But that was because we had ice every week or 2, and it would have been a lot of faff. You need to run them in for 40km before the ice starts, tho as you have already got yours part worn, that shouldn't be a concern.
If you fit them now, you can pump them up to max pressure and they won't be too draggy or too noisy, just remember to drop the pressure when the ice arrives.
Oh, and don't wheel your bike over a wooden floor...
J