I have some rose comb leghorns if you want some eggs, once they are laying again. I can tell who lays what, and I can grab eggs from the friendlier girls. My rooster was hatched from rcbl hen and Wyandotte mix roo. He is shown in my avatar, but that was taken over a year ago, he has filled out a bit since then. Fertilized eggs from him x rcbl eggs I have will be mostly rcbl. The girl I have hatched from him and one of my leghorns is slightly larger than my others and lays a nearly white tinted egg. Other than the slightlly off egg color, you wouldnt know she isn't all rcbl. That may throw your egg color too much, but if you're interested I can help out. Also want to let you know that the hens are hatchery birds from my first ever chicks (mcmurray). PM me if you're interested.
Just took a look at your "Woods on Wheels" coop, that thing is awesome! Every time I see a trailer for sale on CL somewhere I can't help but think how much sense it would make to build a coop on one just for the ease of trailing it when it needed to be moved. Genius!