They are 44 and 42 ounces, respectively, so just above the size of the largest bantams. I do intend on cutting that size down by a few ounces in future generations, but for now they are about the size of a large bantam or a small standard (somewhere between Silkies and Hamburgs).
Hatching eggs... probably not, but if I did it would be late next season. I intend on hatching and raising as many birds as I can myself so I can select appriopriate breeder stock.
I won't be able to sex them as chicks, no. Chances are I'll only be selling sexed juveniles and young adults from the pair. I hope to retain a trio or possibly quad of offspring from any chicks I hatch as breeder stock, and I'll only be able to fully evaluate the birds once they are reasonably well grown. There is the caveat that 25% of the chicks I will know I don't want right off the bat, since both Norman and Norma carry the genes for Silver Duckwing coloration - and I'd like to stick to a pure black variety while developing the breed (with Blue as a possible future project after I've "built the barn", so to speak). Those 25% I may be selling at a much younger age, but it's hard to be sure.