Hi mate, no more than 2 poss 3 full size or 4 or 5 bantams.......... be sure to fox proof yer pen
Your lucky ! Breedwise for egglaying I'd recommend Leghorns (any colour), from a moral point of view get ex battery hens (this is very satisfying) or you could go the rare breeds route. Obviously bantam eggs will be a lot smaller
arent they a active bird and good flyers though ,means i`d have to get netting over the top of the run thxs