I pre-ordered my Inspire 1 almost a month ago, can't wait to get it like most of you. This will be my first FPV-enabled quad. I've obviously always flown with line of sight. I'm not worried about getting disoriented with the Inspire 1, but I'm wondering what performance I should expect from DJI's Lightbridge, especially when I lose LOS. Will I be able to fly reliably over hills and small mountains? Will the video link be maintained in these conditions? Also, does anyone know if Optical Flow will be used to establish ground level when the Inspire is measuring/maintaining its altitude? For instance, if I were to send it to the other side of a small tree-covered mountain of let's say 300ft high, and then lost my signal to the unit at that point, would it return maintaining an altitude of 75 feet (as I specified in the PilotApp settings) relative to the mountain's surface or tree tops, avoiding to collide with them on its return flight? Thanks all.