According to this post
So it is possible that your biometrics request will be available at a later time.
One thing I've learned from the forum posts is that even though CIC's website says applications are handled in the order they are received (and on case by case basis), how quickly people around your applications' time receive certain requests is only a general guideline and consistency of processing times is not guaranteed.
Good luck to you.
I think after the AoR is received, it really is a case-by-case basis. For example my husband has previously worked in Canada (legally of course), which, i'm sure they will be looking at as well.