one last suggestion i will try to give you. you can also take a look at the JL 300/2 and save yourself a few $. Cleaner AB class and perfect wattage. Just have to bridge it and go! I ran one on one of my 12w6 for a while in a ported box and it sounded insane clean.
but there is no way the 250/1 underpowers the 12w3. call JL and they will strongly suggest the 250/1 for the 12w3. no saying im not a fan of overhead, just proving that if you went with the 250/1 for money reasons you wont be short on power.