I's use my high charisma to corrupt Lucy West into a Raider/Slaver lifestyle, then, with Jericho and Lucy's help, take over Megaton. Anyone that protested my rule would be executed (via beheading from my Samurai's sword) and their heads would be mounted on the outer wall of my house.
Afterward I'd turn Megaton into a Raider fortress and staff it with surviving Raiders from each band/group that I fought.
After that, I'd slowly take over the Capital Wasteland, and torture Three Dog until he was nearly dead, heal him (repeating the process until I grow bored) then amputate his arms and legs (at elbow and knee) and dump him in a Feral Ghoul infested subway tunnel.