Honestly, none. I think you'd want to make some significant tweaks to number 1, 2 and 3 to make them usable in this RP. We all love a unique or powerful character but we're focusing more on the scummy, unincredible, common characters in this RP - a former slave, a slave hunter, a bounty hunter and a drunken courier. All four have things that make them unique (French, gypsy, stable dweller, wolfman) and a story to tell but not to the extent that they're important to overall canon. The characters we're looking for are just like any other pony in the wasteland - trying to scratch a living out in a lawless shithole that's slowly becoming better.

Think of it like Skyrim - you're trying to bring the Dohvakiin into the daily lives of Whiterun villagers when he should be off shouting at goats.