Well, it's really up to how you want to play the game. I'm going the way of your first choice, as I'm a Khajit female character that joined the Dark Brotherhood, uses a lot of stealth and does archery (you'll see elsewhere that I've just had a mysterious sudden drop in my Archery skill, which is..inconvenient). As a stealth character, I have to rely on someone like Lydia who's a heavy armor wearer and a hard hitter, but she also messes with my stealth as enemies tend to spot her--but then, they tend to attack her and ignore me, also. As a stealth character I feel more vulnerable than I would as a fighter and I tend to use a lot of poison to increase my odds of killing quickly. I don't feel ready to kill a dragon solo so I can't really go far without a follower of some kind. I do think that no matter what a person chooses, there tends to be some melding. There are times when I've absolutely had to switch to one handed weapons over the bow, or die. A character who wants particular kinds of enchanted weapons will likely have to do enchanting, or may need to use magic against undead sometimes. Even the extra ability you gain as the main character involves something like magic--no matter what kind of character you're playing (and yes, I think you'll want to use that skill). And...to get all the options on that ability, a character needs to be pretty broad in what kind of things they try (being pretty general here to avoid spoilers as well as possible).