A thought for you- nothing's purtier than a mixed flock ranging across the grass, and if you are just starting out you can learn the most from having lots of different birds.
If you get real serious about breeding later, that's different but imo, starting off with a nice mix is a great way to go and avoids all this torturous decision-making anyway.
Good hatcheries will even take the worry off your hands and mix it up for you. Can't go wrong, for instance, with the excellent Murray McMurray (my fave hatchery) who will provide you with a mix of layers that includes fabulous birds. You can get 25 and split em with a friend.
Have to admit that's how I started, after the initial chicks I stole when my daughter's class hatched em ! and it has taught me a lot about a lot of diff breeds, in very little time.
Anyway, it sounds to me like everything you are thinking of is great. Can't go wrong if they're chickens!