Dropping packs and Bears

I don't spend much time in the High Peaks during the summer, but this year will be an exception. I am planning a mid-July loop around the Sewards, with side hikes up to the peaks (basically, Coreys Road, Calkins, Cold River, Ward Brook, Coreys).

Question: what are the opinions on the safety of dropping packs containing food at the trail junctions? Specifically, we are planning a clockwise loop, so we would leave our packs at the Calkins Brook herd path junction and be back after Emmons, etc. and then a couple of days later, do the same for Seymour. One thought is that we may have more food than we can cram into a canisters on the first day (with plans to eat the excess the first day/evening), so hang the remainder, or take our chances?

Thanks for any input.