Alpengeist is 195' tall with a 170' drop, and Apollo's Chariot is only 170' tall but with a 210' drop into a valley. Given the topography of the location of this new ride, it would be possible for it to have a drop larger than the overall height as well. I'm looking forward to hearing more details on this one!
But, as you point out, from a zoning perspective, a queue building is a queue building.
FYI, the most recent press material I have received from the park indicates that the park is once again changing its name. The new name as presented on press material is Busch Gardens Europe Williamsburg, VA. Busch just cannot make up their minds, and seems to be pulling a complete 180 from what they did 6 years ago.