Your fry should be reds and red wags, probably with the majority being wags. I've found that the color will start showing on the fry within a few days (reds seem to color up real quick, it's like they are translucent one day and overnight they turn red).
I can usually tell which are going to be lyretails by about 2 weeks for sure and I'm getting pretty good at guessing at 1 week. If you look real closely (I've been known to use a magnafying glass) you'll see a little hook on the end of the top fin on the baby lyretails while the regular finned babies will have a more rounded top fin. The tail fin doesn't usually start showing the difference for another couple weeks after that. I've also noticed that the lyretail ones will have a slimmer look to their body. I've been averaging around 25% lyretails lately out of my lyretail girls when bred to a regular finned male. However, I've got one batch right now out of a lyretail female bred to a hi fin male and almost half are showing the lyretail characteristics.
Good luck with them, give momma some bloodworms to reward her for a job well done!