Looks pretty good to me. I like the space between the drain area and skimmer area. If you have egg crate there it will be a great place to put chemical filtration like socks filled with carbon, etc.. Actually you might want to move that area over to the return side so it doesn't get clogged up by waist and the skimmer can handle the majority of raw overflow. Something like this: (I copied and altered your picture. I hope you don't mind )
