I don't think it's going to be easy to come up with a range. You can look at the yahoo group (transferapps, or something) and see if you can discern a pattern for those who UC Hastings accepts.
But, what I can tell you is that if you're top 10% at SCU, you'd have a VERY good shot at getting into UCLA. If that's any indication, I'd say Hastings would also be a good shot.