Thank you very much for your questions. I wish everything will go smoothly the entire trip without any obstacles. If in case, interrupt your journey due to a physical problem; at this movement, our guide will take rest for you to recover from and take some medicine. Still, it is not better then the guide will keep continuing with the group and the assistance come back with the needy person. Our guide will update everyday trip conditions whereas availability of communication systems. But as you are coming with a friend this depends on you either staying with friends to taking care him or keeps on the trip lift with porters. If anything you need emergency evocation, we are ready to assist you anytime, just you need to insure up to 5,500 meters elevation for rescue and hospitalize, in case you needed. I am sure you are physically fit for the Gokyo Chola Pass, and the trip goes gradually up with enough acclimation before pass fewer chances of high altitude sickness.