What ever you do, I strongly recommend that you have your coop and run built before you place your order. And consider how you will brood them. My recommendation is to brood them right in the coop, and use a heating pad cave to brood them. Be sure you build your coop and run big enough: a minimum of 4 s.f. in coop and 10 s.f. in run per bird, and use hardware cloth to cover all coop openings to make it predator proof. Lots of ventilation needed year round, yes... even in the dead of winter.
If you can sell any extras, you might order 8 - 9. That way you can re-home 2 - 3. This should cover any failure to thrive chick or a oops cockerel. I would avoid selling a single bird b/c of the stress of a single bird moving into a new flock.