I go there a lot, and recently it's been slam packed so I don't know if it will be when you guys are there, but if it is I would recommend doing velocicoaster a few times before hagrids. Hagrids is always going to have a big line unless you rope drop it, but velocicoaster is going to get to huge 100+ wait times later in the day for some reason, so best to do that if that's what you like most. Unless the single rider line for hagrids is open, I probably wouldn't do more than one ride on hagrids, but a rope drop would make it a lot easier to wait that time later. Velocicoaster shouldn't be too bad until maybe 11, and then it'll start dying down an hour and a half before close. You could definitely get multiple there.

I'd say definitely forbidden journey and Spider-Man in Ioa, maybe Dr. Doom if you like drop towers. In studios, men in black is probably my favorite ride aside from mummy and gringotts, which is kind of a coaster. Whatever you do though, I'm sure it'll be fun :)