Does anybody have any suggestions for me on this? Or should I just use her with a large male next year?
Oh, on the molting of young birds... I hatched last December and those are the young birds that are finishing up their molting now. Would this molt be equivalent to the one usually done at 18 months as there has been a total change in feathers? Will this show me the same things as that later molt? Bob used to say... breed from your older birds who have gone through that first big molt and you will know what you truly have. So, what I'm wondering is, could this situation be considered the same way?
On the first question, I would say try her with both a bantam and a LF male and see what each produces - she may carry genes that differ from her phenotype.
On the second question, if they appear, post-molt, as you would expect them to after a normal 18-month molt, then yes, I would treat them that way. If they appear as if they have just gone through a juvenile molt with more to come in 6 months or so, all bets are off. If there is no discernible difference, treat them as if they have finished their 18-month molt, and hope for the best. Late/early hatches can throw things off, and I suspect every strain behaves a bit differently. If you were to hatch from them in the next month or two, they may do exactly as the parents and molt next December or January, and then hold for a full year. Would it be preferable to have them molt at 12 months rather than 18, to give you an earlier idea of adult plumage?