If you put the port inside the box you need to subtract the volume of the port that is in the enclosure. Your box would end up too small if you put as much port as you listed in your first pic in it.The volume with nothing subtracted is 2.188 FT^3. Sub is .11 ft^3, 2 braces I have are 0.0143 ft^3.
You ideally want around 1.75-2 cubes net, I always shoot for the higher end because you can always make the box smaller, not larger.