port tuning

i am building a box for 4 12w3v2 and there is gonna be around 2 feet of cubic air per chamber for each sub. the question i have is should i go with the jl recomented tuning of 30.8 or should i go with somethin like 32hz or should it be around 37-38hz?  i want it to be as loud as they can be so what should i tune the box to?

i need some help with my box

the external dimentions of my box are: 

19.5" wide

21.75" tall on one side and 18' tall on the other side

and 17" deep

and its all made out of .75' mdf

the question i have is that i want the box to be tuned to 32 Hz with a 1-2" inch port more twards a 2 " port, but i cant figure out the port lengths?  ive tryed using the reaudio.com's box calculator and it is telling me the 1st port length should be 16.25" long, but that only leaves .75" for the port? that doesnt seem right and then the 2nd port length says 12".  so i was wondering if anyone can just end this confusion for me and help me out and tell me what i should make the port to to tune the box to 32Hz? or are those dementions good for this box?

I'm not 100% sure what you are saying in some of your comments... but your dimensions create a 2.97 cubic foot enclosure volume.  If you want to port this with one 2" port @ 32Hz, your port is only 1.32" long.  To be accurate, we'll need to take into account the volume displacement of your speaker and bracing, but 1.3 to 1.5" is close.

Then you talk about 4 subs.  Are you trying to put 4 speakers into this one enclosure?  This will change things radically, if you can make them fit at all.  Or are you building 4 enclosures like the one you describe, one for each speaker?

A 2" port is probably too small for this system as it will make lots of noise.  I'd use a 4" port  @ 8.2" long.