I have just completed the Lego Disney Castle with the full light kit.  ( order #1734722674)

I have fitted an additional ceiling light (from the spare parts provided) to the candelabra room and fitted an additional decorative wall section and a couple of 1 x 2 x 5 white bricks to cover the front of the space under the clock tower so the A10 board , and bunch of cables can’t be seen through the candelabra room window.

Think the light kit is great and instructions easy to follow, although the full kit is a bit pricey I think it’s worth it for the end result

Regards

Alan