It's lots of fun to play with these ideas beforehand. If that is your real layout the Everest cabinets need to be inside.
It could look good, personally I would not do that. Subs are in utility cabinets for good reason. Half the time they end up hidden because of placement. What are you going to do if they don't work in your perfectly symmetrical lay out? Lot's of work to potentially be hidden and no gain in how it will sound.
What's your budget?? If you are open ended have at it.
The most important aspect of the system is how it sounds not how it looks.
Rob