On my second run through with a near maxed survival cowboy character.

-Bounty Hunter Duster, Slave Scarf and Sunglasses
-Trail Carbine, 408x SWC and 128 HP rounds
-Leaver Action Shotgun, 80x Magnum Buckshot
-6x dynamite

Anything required beyond that the DLC will provide.

-Gobi Campaign Scout Rifle, Lever-Action Shotgun, That Gun, Frag Grenades (just 5)
-Reinforced Leather Armor, Authority glasses, Pre-war hat

-Basically any drugs that don't have weight
also Brahmin Steaks, Coyote Tobacco Chew, Desert Salads, Stealth Boys

-Boone and his Brush Gun. I'll load him up on ammo.