Love my 450XD, top-notch hub. The walk-thru door and insulated StormShield fabric are especially great.
However for your situation, I agree with the above posters - go for the 650XD if bringing the family out. It only weighs a few more pounds than the 450XD. I cannot see actively fishing (jigging) any more than (3) people inside the 450XD. Having (4) adults and a bit of kit just sitting idle inside awaiting the next flag gets cozy in a hurry.
Good luck!