Church Time Dilemma (I hope this doesn't start anymore drama with time gaps lol)

So our church ceremony (full mass which we def want) is currently scheduled for 3:30, cocktail hour at 7. We figured that since it's the first Friday of the month, most Catholic Schools have a half day and we figured it wouldn't be a problem to move the ceremony to 3. This way it would go from 3-4:30, Pictures from 5-6:30 (possibly at OWG) then make it back to JT at 7. FH wants to go into the cocktail hour for a little as well as the bridal party and I hope to be having my hair put up during this time before the reception at 8. I'm not going into the cocktail hour, I really want my hair put up for the reception so it's off my face and I can feel cooler hopefully when dancing. So apparently St. Christopher's does not have a half day on First Fridays (I'm currently trying to call the school to confirm this). Appparently the students get out at 3 and the woman I spoke to from the Parish said it would possibly be chaos with parking, etc. Moving it to 3:30 pushes everything back a half hour. The sun sets on that day at 6:34 I believe so a half hour of our pictures would be in dark if we do pay to go to OWG. We'd make it to JT at 7:15, with seeing the room and getting settled, only half hour left for cocktail hour and to get my hair put up. I really don't want to be rushed and was so happy with the possibility that I thought would work with moving the ceremony to 3. The woman I spoke to said I could still ask the priest and maybe he'll do it, FH doesnt think so though. But, if we do move it up are we crazy to have the Mass start when the school lets out (I'm also trying to find out the exact time from the school so I know for sure)? Is pushing it back a half hour going to screw up a lot with it being dark and rushing back to JT for the reasons mentioned above? The church is 21 min away from OWG and OWG is about 10 min from JT. I really don't want to switch the church, I love it, I'm so torn as to what to do. Please pass along any feedback, thanks so much!


Mini-update: I just got through to the school, dismissal is at 3 and 3:05. She said the buses are by the school parking lot though and not across the street by the Church parking lot, do you think that helps?. Hopefully there is a possibility that it's not too hectic and the priest will do it for us. I just don't want to get my hopes up again and then be stuck. I want to ask the priest in person on a Saturday after mass. However we're prob going to be in SI for the next couple of weekends, so unfortunately I may have to wait. Unless I can't take it and I just call to speak with him directly....Sorry so long!!