My Teksumo FPV flying wing setup:
Motor: D2826-6 2200kv (weight 50gr)
Speed Controller: 40A ESC of your choice, needs 1-2A UBEC
Prop: TGS Sport 6x4E Precision propeller (do not use floppy slowfly props, use a stiff ones)
Battery: Turnigy 2200mAh 3S (weight: 201gr – with 50gr motor you cannot go much lighter than this..)
Servo: Turnigy 9025MG (do not use lighter servos, needs strong ones)
Gyro stabilizator suggested but not a total must.