>ok so the only thing i need to buy, is the mouse guard?
That's the only thing I would buy. Some people wrap their hives with tar paper or the wraps the bee places sell. I never have.
> where would i get that?
The hardware store.
1/4" hardware cloth AKA #4 Hardware cloth. AKA hail screen.
>( can i just make the entrance smaller with the entrance reducer? because mine right now is still totally open. all the way...
Making it smaller is probably a good idea going into winter but it will NOT keep out the mice. They will crawl through a 3/8" by 1" hole. They will chew through a 1/4" by 1" hole. They can't chew through a 1/4" by 1/4" hole in metal hardware cloth.
>than take out the honey... and take off the supers that are empty..... and start feeding them with sugar syrup...
I woulnd put the supers back on right now. I wouldn't pull them off the hive until it starts frosting at night, then I'd pull everything that's empty off so the cluster doesn't move into an empty box and starve.