You think you're in trouble now..............just don't buy an incubator!
Well, lets see. I started with 7, then lost 2 in the first year. Then hatched, then hatched again and suddenly I'm up to 25 chickens! (how'd that happen? *scratches head*) And the kicker is only 5 of them are laying!!!
All the rest are too young to be laying. I am eagerly awaiting my first wellie eggs! (they are 23 weeks old) And now we're building a 2nd coop that's 8X12 because the one that holds 15 chickens is not enough
So, now, on to your situation:
From my experience here are your MUST breeds. Barred rock, EE, and Welsummers. I had a BO, but we lost her in December. (she got scared by something and flew into the coop and broke her neck) She wasn't overly friendly, but was a good layer. (And if you want a broody to hatch chicks later BO's and Wyandotte's are great broodies.....cochins too) My RIR is a great layer and super sweet to people, but not so nice to the "new" chickens on integration. (those would be the welsummers)
If your coop is raised off the ground, then they can rest under it in the rainy or hot weather. Mine is raised and they love taking their afternoon nap under there.
I guess I didn't help you narrow your list down any, did I? Refer to 2nd paragraph again.