Tires for 2013

Hello everyone! Yep, first time! Have always had Fords but heard that Toyota was the best. So, here I am! Anyway, bought 2013 Tundra 5.7 4x4. Dealership had "Passenger?" tires 255/70/18 on it. New I would replace. Question is "What brand of tires, Size and Type" should I put on? A/T, L/T, Highway? My driving is mostly in town, rural roads, highways. However do ski in NC mountains, hunt, fish, pull 19' Carolina Skiff about 130 miles couple times a summer to beach, about 400 miles to mountains up Lake Glenville in NC. So, truck will be doing a lot. So, What size and type of tire? Have called local Toyota Dealer and they were great but they said 255/70/18 P or LT? Need help from someone that drives a Tundra in similar situation. Thanks