Style 1 -- Easiest to build, but looks a little bulkier than the rest.
Style 2 -- Nice looking, Watch out for it going through a wall because of the cutout on the bottom rear.
The upper part is going to hit the wall before the bottom hits the baseboard.
Style 3 -- Don't know what you're planning for the kickpanel.
If it's a straight down kickpanel, the bottom sides are going to be exposed to getting kicked.
If it follows the cab shape, people won't have any room for their feet.
You might think about moving that whole shape back to make the bottom of the CP a little deeper, and give people more foot room.