box recommendations for smd 18

[gottahavbass917]

Equipment

1-smd 18 d2

1-cresendo audio bc5500 (*will not be putting full power to sub*)

mechman alt(soon)

3 xs 3100(soon)

Box Specs

5.59 cubes net

80.75 sq in of port

14.45 sq in/ft of port

tuned around 31hz

Let me know what you think of dimensions for the box and any suggestions. main goal is to get loud and maybe move some air(hopefully)