Box for two BL 18s

[Derrick824 4]

I've been playing with my max dimensions and the biggest/best box I can come up with will be 12.33cu ft w/ 192.5sq in of port tuned to 32hz. I would like 13-14cu ft but the only way I can get any more box volume will be to shrink the port. Will these specs do okay for a daily driver that does part time competitions? Primarily it is a ground pounder. Thanks

[Derrick824 4]

I just ordered the subs. A pair of dual 2ohm 18" BLs w/ cooling and flatwind. Has anyone used aeroports with these subs? If I had 14ft net to work with, how many 4" aeroports would be needed?