Long flight time 270mm quadcopter

Flight time 30-40min (To be specified)
Total flight weight: 395g
Arms: 10mm aluminum tubes (probably carbon is suitable)
Motors: GARTT ml 1806 1400kv
Props: 7.0 х 2.4 carbon
ESC: 12a
FC: CC3D mini with iNav
Camera: 600TVL 1/4 1.8mm CMOS FPV 170
VTX: 200mW
OSD: It is planned
GPS: ublox
Battery: Li-Ion 3S 2900mA (10A cont)