As someone who’s recently completed WFR Training, it’s helpful to identify how many people in your party, what risks are most evident for the trip, any allergies or medical conditions for the people in your party and how far you are from medical support/evacuation.
Having lived in the PNW for most of my life and having climbed Liberty Ridge, I’d say some of the biggest risks for injuries are: Crevasse Falls on the approach and descent, sunburn, dehydration, rockfall on most of the ridge, AMS from Thumb Rock over Lib Cap and until down to Camp Sherman, all kinds of cold injuries if the weather turns bad or if you get pinned down due to injury.
Not knowing how many people in your party or their medical conditions, I’d leave out the Benadryl as the environment does not lend itself to allergic reactions (bee sting etc), just food allergies. I’d just add some butterfly strips to your current list (like Steve suggested) and I like a small container of petroleum jelly or ointment to put over wounds or blisters before applying the bandage. I know it adds some weight but you might consider bringing one shovel for the team in case you need to take shelter between Thumb Rock and Camp Sherman. If weather turns bad, there’s not much rescuers can do up there and climbers should be prepared to wait out the weather. Also, it may be helpful to review improvised splints in case someone takes a fall or is hit by the bastard rockfall that seems to be prevalent on that route.
