The height sensors are all 5v, so they'll plug straight into the analogue inputs on an Arduino (the uno has 5 of them). The valves & compressor relays require 12v to switch them on, so you need some sort of optoisolater or a current sensor to monitor those.
My main blocker at the moment is sourcing the 35 pin connector so I can make a pass through type setup rather than butchering the existing wiring loom
You can connect to the EAS ECU through the OBD connector to monitor live readings. Doubt it'll halp with dancing though. That's usually a dodgy connection somewhere or the height sensors need calibrating.