12 power binoculars will work fine as well any good 8 or 10 power glass. The 12's will allow you to pick apart the animal at longer ranges to see if it meets your goals.
Why are you buying gifts for you hunting party?? It would be gift enough to help a buddy out on a once in a lifetime hunt. Moose are huge so throw a little meat their way as a thank you.
I can't speak to the area but finding a moose shouldn't be that difficult. Time in the seat and eyes in the glass will turn up moose that time of year. I'm sure as it gets closer, other members will chime in via PM to help you out with specific areas. Most hunters want people to be successful on these OIL hunts.
Good Luck on your hunt and I hope to see success pics You have every right to be excited.....should be a great hunt.
