In my opinion, and this is a very specific opinion, so I understand if many people disagree with me:
Choose an origin character. Get a full party. Make each character specialize in something, but don't be afraid to branch out a bit. There's fun in rangers, fun in rogues, fun in casters, (a bit less) fun in fighters, but you can mix and match your class. And don't feel stuck because you eventually get a mirror that can let you respec and remake and rebalance your characters. And try to explore and do everything in a certain way.
