I cannot figure out what is the best solution for you. Please navigate to the Theme Settings > General layout and you can set their custom width for your site. Try different options to find the best one.
sadly that just changed the whole background which can be done from theme options.
I’ve decided to stay with boxed and use theme options to do the side bar areas but how can I make rev slider fully display? I played around with width:100% and height: auto but couldn’t get it to work.
I can use boxed(hidden) option for everything else and I’ll edit the menu too.