Reviving this thread...
I'm hoping to start breeding Blue Wheaten bantams this year. They've been incredibly hard to source, I've found several Wheaten breeders, but no one seems to be concentrating on BW bantams anymore. Seems pretty ironic as there are so many LF BW breeders around.
If I can't find any BW stock I plan on outcrossing Wheaten birds to Blue bantams to bring the Blue gene into my line. It will take several generations of hatching to get to pure, true breeding Blue Wheaten bantams, but I've got the time and genetics knowledge to do it.
Have you considered a LF x bantam cross. I would say a bantam wheaten cock over some LF blue wheaten or splash wheaten hens should work. No color issues just size issues. should look good by 3rd generation going back to bantam each time.