I have a 5 by 5 powder room. Facing into the room, The counter runs the length of the back wall and there is one sink on the right hand side. The mirror is full wall. I am wondering if I should switch it to a smaller mirror and if so, centred over the counter or over the sink? The toilet is on the left side, parallel to the counter. Door faces the mirror. And wondering if I should do a smaller mirror with lights on side rather than on top as currently is.