Hi there, I am new to this forum and signed up because of all the knowledge that is out there. I would like to run some numbers by to see what you think. This is what I have and plan to run.

2 Lanzar Opti 2x300

150 Watts x 2 RMS Power into 4 Ohms
300 Watts x 2 Max Power into 4 Ohms
600 Watts x 1 Max Power at 4 Ohms Bridged
250 x 2 Watts RMS Power into 2 Ohms
Minimum Speaker Impedance: 2 Ohms

1 Alpine SWR-1242D

RMS Power Range : 50-500 Watts
Peak Power Handling: 1500 Watts
Impedance: Dual 4 Ohm

I plan to place the single sub in a Bandpass box with the Dim. about 15x15x20 giving me about 1.74023 cu. ft

Wiring each voice coil to one amp. What do you guys think. Are the amps ok for this aplication and what should my port size B?

Thanks in advance