I really like orps but don't lay as well as RIRs and not particularly predator proof - not that RIRs are either. I was standing in the midst of chickens on 2 occasions and saw a fox run out and grab an orp hen before she knew anything was afoot.
This is just me but if I was going to do an egg...
For a heritage or pure non-hybrid breed that lays brown eggs, RIRs are probably your best bet in your climate. If you get them, get only them since they tend to be the bullies of a mixed flock.
I assume you'll eventually have at least 100 layers. Since you don't have a lot of experience yet...
The best laying chickens are hybrids like Hy-Line or ISA.
http://www.isapoultry.com/en/products/ A lot of hatcheries carry them.
http://www.hylinena.com/aspx/productsandservices/productsandservices.aspx?eid=1
For a beginner, you may want to get sex-links...