Did you read my earlier post? It seems like C.S. Lewis didn't really even care much about the order. He originally wrote LWW as a single book, and then decided to write more.
It seems like the order was not of concern to him, so I don't know why anyone is arguing over the order.
It seems to be a personal choice, and let it be at that.
I have let it be. You will notice my last post was some time ago.