So I got my p2 as a Christmas gift. I will be doing the first flight soon once I have read all the manuals and watched a few videos before I dare try it for real. Just some questions. Can I fly it from a large car park / parking lot that ahs metal railing near to where I would be launching? I heard its not good to take off from concrete is this true will it affect the magnetics or something? For the first flight should I test the return home function or not? Do I need to calibrate everytime I go flying with it? I know the tx is on 5.8ghz so what sort of range are we looking at and does it penetrate objects at all? The fpv is 2.4ghz hows the range on fpv with the booster? I heard you can put it into some mode to increase the range from 300m to 500m is there a switch on the back of the tx? How do you control the pan from the camera? Thank you any other tips are very much appreciated.