Congrats! I'm super jealous! I did have a female shed yesterday. She's been hanging out on the hot side and stopped eating about two weeks ago. She ovulated June 13th last year and her behavior told me she may go sooner this year. I may have very well missed her ovulation and she just had her pre-lay shed. I'll be keeping a close eye on her. My other female was 1900 in August and is now pushing 3100g. She's a virgin girl and in shed. She's still pounding food so I hope this shed is her pre-ovulation shed.
I think it depends on the female. Out of the three females I'm breeding, two look like they are going to go. One is a virgin, one ovulated June 13th of last year. If you see my response to the quote above, you'll see that I think she may have ovulated about a month sooner. The third girl I'm breeding LAID in May of last year. I doubt she's going this year. That's really all I can give you. I think it depends on the female and their overall body condition when you beginning pairing. I just don't have the data to back up my claims just yet.
Congrats! At least you've got some good things coming!