While your birds are very well conditioned and may make great egg layers and pets, they unfortunately are not what you'd look for in a show-quality Wyandotte bred to the Standard of Perfection. They appear to be hatchery quality, which means they have been bred more for egg production than correct Wyandotte traits and showablity. Hatcheries and feed stores distribute birds that "kind of" look like a certain breed. Your Wyandottes, for example, do have the general Silver-Laced pattern, the cold hardiness, the yellow skin, and the rose combs of the Wyandotte breed. They are perfect for a hobby farmer or backyarder with a desire for excellent egg production and temperament.
However, a purebred show-quality Wyandotte bred to the SOP would be considerable larger. They would also be deeper, more profusely feathered, rounder in appearance, and wider. Your hens' tails are rather rectangular and thin; a show-quality Wyandotte would have a tee-pee like tail with roundness and width as wide as the back. The Wyandotte is a bird of curves, designed to fit in a circle. The head should be round, the body should be round and deep, and the tail should be rounded and blend smoothly into the back. Your birds, in contrast, have a shallower and rectangular shape with harsher angles. They're great egg layers, but not ideal Wyandottes in shape.
Also in color, your birds fail somewhat. The laced color pattern is very hard to get right. It is supposed to be crisp, with even borders around each feather and a pure silver color in the middle of each feather. I see some mossiness in your birds' lacing (black specks in the center of the feather), frosting (black edges fading to a grey around the feather), irregular lacing (uneven over the body), and dark lacing (too much black).
I hope this doesn't come across too harshly, I'm merely giving my own opinion on how similar your birds are to the SOP. There is always room for improvement, in any bird. Your goals will determine whether you breed these birds or not. If you want happy, healthy egg producers, definitely go ahead and breed them. But, if you want to begin showing, I'd suggest finding a Wyandotte breeder and obtaining some new stock. Most likely, if you brought one of these to a show, the judge would mark "Commericial", or "Size" on the cage card, since they are a commercial style Wyandotte instead of show birds.
