9 a.m. will give you enough time - I remember thinking that I wished we had just one extra hour so that we weren't running so much. I missed one of the parents' events that I would have liked to have gone to, because we had to make a quick trip downtown to pick up the odds/ends.
I don't remember using/needing a tool kit, but it does sound like a good idea.
Colgate does make move-in day really easy in terms of getting all the stuff into the dorms - you unload all your belongings on the field on the bottom of the hill, and then swat teams of upperclassmen pack it all up in trucks, drive it up the hill, and then even carry it up to your rooms in the dorm. Given the hills and stairs involved, this is great! Maybe you'll meet my son - he's going to be working on move-in day this year.
One of my favorite parts of the day was pulling up to the light to turn into campus - a large group of upperclassmen were at the intersection, banging pots and pans, holding large banners that said "Honk if you love Colgate", and cheering for each freshman as they drove onto campus. All the cars and trucks driving by were honking. Sappy, I know, but it made us smile.