Boot recommendations for 15 year old son doing a 7 day trip.

My son is doing a 7 day backpacking trip with his camp this summer. It's not a crazy hard hike, but its strongly urged to by a high-quality ankle supporting boot. We visited REI and were advised towards a lighter, less backpacking focused shoe, such as a Salomon X Ultra 4 Mid. But, when we visited a local store near us, they recommended going for a heavier boot such as a Lowa renegade. The local store also said to stay away from lighter shoes like the Salomons for the trip. My son is also quickly growing and these shoes likely won't see much more backpacking besides this trip.

Thank you for any help