Cool, that's what I'm gonna have to do this year with my dinker female that I've been working with for a few years now. She only eats during Spring and early Summer, so by the time we get to the traditional "breeding season", she just isn't beefy enough anymore for me to feel comfortable breeding her. Did that 2 years ago and ended up with 6 slugs. She's an old adult and just set in her ways, so gotta conform to HER schedule. I'm determined to prove her out one of these years though.
It's a benefit having hatchlings ealier (or later) than everybody else too. Trying to get rid of the babies you're not keeping while the whole market is completely saturated with hatchlings can be pretty futile. Good luck! :)