We have been struggling with this topic as well. basically you have to secure a place in a school first, then worry about how long the commute will be afterwards.
I'm no expert. I dont actually move out until Nov, but we have been trying to get our son in school forever. The commute has been the least of our worries.
Basically you do what you have to until you get your feet on the ground and can get a local feel for things.