Elevators should be built as shafts, then doors. The placement of doors determines the stops, and you simply stack shafts on top of each other until you get your desired height.
Also you should have the option of overclocking the elevators if you have a super high structure.
Ie: normal mode - select floor, door close, accelerate for 1s, reach clocked travel speed, decelerate for 1s, stop, open door.
When overclocked, the travel speed significantly increases.