Well there has been plenty of discussion in the past about despatching NicandChic -just don't shoot yourself in the finger like I did!
Cockerels with hens is only worthwhile if you are going to breed in my opinion. Otherwise the downsides far outweigh any upsides, unless you are truly free ranging (without boundaries) in which case a cockerel is needed to keep them together and safe. Gordon, the neighbouring Black Gascone cockerel, spends a lot of time rounding up his 5 hens here. The area he covers is about 3 acres. He is running back and forwards all day. Problem is the strays out in the open could be hit by Buzzards -we had 9 circling us yesterday. Young cockerels can be very rough with the pullets and we have had to separate one of ours because of the damage to his girls.
We have an ex-Wyandotte breeder near us (which is of no use to you whatsoever) as they are a French kept breed as well. So when our Blue Laced Cock died we only had a 20 mile drive for his replacement -the only one advertised in France at the time apparently. She is packing up to concentrate on Orpingtons and rabbits. You could try the Laced Wyandotte Club, which we used to belong to, for a reputable breeder near you. Collette Roberts was the secretary 01691 780245, an email address of 'thelaced.wyandotteclub@yahoo.co.uk' is on the letterheads.