decisions, decisions

Yesterday I got a call from RL preschool, the one I had Mollie on the waiting list for a 3 day spot...
She got a spot in the 3/4 class which is for older 3's/young 4's. This would be perfect for Mollie I think. But I'm not sure I want to take her out of where she thinks she'll be and on the same Tu/Th schedule with some of her (and my) friends. Mollie and I are going to visit this morning at 9:30.
Then we're leaving for the lake.
I still have no idea what to do! I have a pros and cons list and it's going both ways along with my gut...