if you're not enjoying the game because of who you chose, then start over.
honestly I don't think the stats at the beginning REALLY govern that much. Basically you can just work on any skill set and max those out, major or minor skill. The only difference is you need to up a major skill in order to "level up"
My character is very similar to yours, I'm an Argonian Bard under the shadow. I rarely use the invisibility ability (though it is good for running away from crowds of angry people
) and if I'd known you could enchant rings for that before I started I would have just done that instead. Waterbreathing and protection from poison and desease are useful too, But you can really enchant or mix potions for just about ANYTHING to give you ANYTHING that you'd get under a particular sign or as a particular race.
I chose a blade major but I'm finding that I like Marksmen and Destruction magic better, both are minor but I'm working on those skills and could very easily have them be more powerful then blade if I wanted to.
IMO the stuff you choose in the beginning only helps you out until you're a level 10 or 12 or so, at that point the benefits from your starting stats are useless compared to the things you can do with enchanting or just building up your skills in other areas.
If it really bothers you just start over, there are enough quests you could just take a completely different path and it'd be like you're starting off from where you are. If you've already finished say the Thieves Guild then don't even bother in your new game, just do something else