I absolutely LOVE the story you wrote! now THATS the personality of the true Dragonborn.
I always go with a 2 handed axe on ALL my true nord builds, it just seems like it would fit the Dohvakin.. the 2 handed ancient nord axe is usually the prefered choice, even tho its very weak at first that can all be changed once your smithing and enchanting are up to par, i like the ancient look of it a lot more than the dlc nordic 2 handed axe, imo that one is too pretty for a true nord.. i also equip full stormcloak officer armor once Ulfric gives it to you later in the quest line because to me it sends a clear message to all imperials and is very fitting if you're RP'ing, but thats just me, i really like your idea with ancient nord armor as well.