I fly the P1, the instruments are as described above, it doesn't have any pitch or roll sas, only yaw sas. It is smooth in still air but a bumpy ride during the day when the thermals get going. The P2 with the pitch and roll is a whole other aircraft, much nicer to fly.
The fuel system is in Kgs on ours and we plan for around 200Kgs per hour. The two small tanks hold 49kgs and 45kgs and the main tank holds 420 / 440 depending on how much fuel you are prepared to spill. It also has a nasty habit of spitting fuel all over you no matter how slowly you fuel...dirty girl.