Well if you want to join the stormcloacks and fit in there my suggestions would be:
1. Find amulet of Talos, and wear it. Even if not using shouts, it still shows faith.
2. Occasionaly pray at the Alter of Talos, other gods are allowed but Talos always goes first
3. Avoid any Imperial cities, Whiterun is acceptable because it's independant but don't go to Markarth, Falkreath, Morthal and Solitude before the war is over or they have been conquered
4. If you come across imperial patrols you kill them
5. doubly so for Thalmor patrols, you can proclaim your love for Talos first though if it's the bounty you are worried about.
6. Stay away from magic, this means enchanting and all kinds of spells. Alchemy is allowed, because everybody uses that up to a point.
7. Smithing is a very viable option, but stay away from Daedric stuff. Daedra equal magic and Nords distrust magic and Daedra in general.
8. Join the Companions, there is no higher honor for most Nords
9. I would say do the MQ, you are fighting Alduin and dragons... You can follow in the footsteps of Ysgramor and Tiber Septim themselves, what could be more glorious then that.
10. Accept any and all fistfights, you are a Nord after all.
11. Stay away from any and all Daedric quests, even "good" Daedra are still Daedra and Nords don't like the Daedra
Further, stay away from the Thieves Guild and the College of Winterhold they are not for you. Join the stormcloacks as soon as possible, possibly before joining the companions. Any quest that can be done against the Thalmor should be done, any quest for them should be completely ignored.
Spoiler If you do the MQ and you get into the embassy, kill the Thalmor as much as you can. Paarth should die, the Blades are probably more important towards most Nords considering their history of fighting the Altmer and protecting the Septim family line
I wouldn't really make your char racists if I were you, it makes things to difficult, and very few stormcloacks are actually racists but as so many NPC's say "Skyrim belongs to the Nords" so Nords should go first.
As for tactics, either two handed-swords/axes or one handed swords with shields. Those should be your primary weapons. Don't use warhammers, those are for milkdrinkers, don't use maces either, again milkdrinkers. Stealth is out of the question, you are a Nord you go in proud announce yourself and then kill all those that oppose you or die trying. Definitely wear Heavy Armor, but try to stay away from Orcish and elvish stuff meaning go straight from Steel to Dragon... Ignore Orcish and Dwemer.
If you want a side job, then go ahead and have fun. But I see no reason for it, you are a warrior! Act as one, let those that stay behind take care of such low tasks, you are there to kill Imperials and Elves nothing more.