We already got down into the low teens in my area. I moved my legbars inside after it got gold enough to turn their combs purple. The rose combed chicks from them are not affected at all by the cold.
You should try crossing him with a lightbrown colored hen. If you have any welsummers or light brown leghorns, those would be better than many breeds. I crossed my rooster with some rose combed light brown leghorn hens to work on a rose combed legbar. I will breed these back to legbars and just...