I'd remove 3rd row entirely and keep the kiddos in the middle row. Removing the 3rd row definitely yields more cargo area.
We'll do a couple weekend ski trips a year with visiting friends or family where we cram 6 adults and gear into the LX with a box up top for skis and boards. It's tight, but for an occasional weekend, doable. Typically I'll leave one side of the 3rd row in and remove the other. Cargo area is packed floor to ceiling. I suppose as long as the 3 of them are fine sitting next to each other then you'll have plenty of space in the cargo area for 5 for all ski related gear or even that plus supplies for a weekend trip no problem. And skis up top in a box.
We'll do a couple weekend ski trips a year with visiting friends or family where we cram 6 adults and gear into the LX with a box up top for skis and boards. It's tight, but for an occasional weekend, doable. Typically I'll leave one side of the 3rd row in and remove the other. Cargo area is packed floor to ceiling. I suppose as long as the 3 of them are fine sitting next to each other then you'll have plenty of space in the cargo area for 5 for all ski related gear or even that plus supplies for a weekend trip no problem. And skis up top in a box.