Do these box specs look good?

[dkahns51]

ok my neighbor wants to go louder and hes looking to buy more crap stuff on c-list that is just as bad as what he already has. So then he asked if he could buy my good stuff for cheap.. so i had to think of an alternative to get out of that situation and told him a new box would be better for him. Anyways.. I figured ide help him out on a box because i enjoy learning this anyways. His sub is a JL10w1 300rms.. hes running a Fosgate punch 4005100x2 4 ohms or 200x2 2ohm. (he got this setup at a pawn shop.) Anyways.. Here is my design for his box.. Does it look good? I think the ports a little big.. but i had to get the frequency down. Recommended ported for JL is 1.5cubic feet. (his current box is a pre fab sealed box.)