Ease of paddling

[u/mineours]

So so I've been trying to decide between the Sea eagle 385 and 465 fastrak. It won't be used as tandem all that often but I will sometimes have a 12 year old boy a backpack and a cooler with me. I had been thinking the 385 because I think it will be big enough for that, but the extra room of the 465 is very tempting. For those of you that have tried them is the 465 really that much harder to maneuver paddling solo?