Unless they’re the same age and skill level (which it sounds they are not) and you are hoping that they make the exact same team, there isn’t much of an advantage of having them at the same org assuming Org 1 isn’t the only rink in your area and Org 2 is an hour away. The likelihood of their schedules aligning and their practices or games being back2back is very very low. I have kids playing at different age and skill levels and they’ve played in the same org and different orgs. When playing in different orgs it wasn’t a big deal because it didn’t matter to us if we were driving 20min east to one rink on Monday and then 20min west on Tuesday to another rink for the other kids practice, I’m still driving 20min to a rink for a practice on that specific day.
If your child who made org 1 is excited about their placement, I say let them be and allow your other child to have their own experience at a different org that is more open to their skill level.