And I'll just add that, as discussed elsewhere on HBT, you can take it down below 32F when cold crashing since it's beer at that point. Charts can be found, but for reference, if you're cold crashing a 5% ABV beer, it won't freeze until 29F, 7.5% freezes at 27.4F, and 10% at 25.7F.
It's only a few degrees, but if cold crashing works better the colder it is, then why not? (unless you've got non-alc stuff in the same freezer, of course!). Also you want to make sure when you're down that far that your temperature probe is at the bottom of the freezer.