Nice motor the extra KV over a hexTronik D4023-850 allows for a smaller diameter prop with equivalent thrust. 
Ran some tests gets a wee bit warm on full load. 

Comparison 
hexTronik D4023-850 best thrust 1719 Grams swinging 12 X 3.8 
hexTronik D4023-850 best thrust 1404 Grams swinging 11 X 4.7 
Turnigy L3010C-1300kv 1632 Grams swinging 10 X 6 

Test results
Turnigy L3010C-1300kv (420w) 
H-KING 50A Fixed Wing ESC 
10 X 6 Windsor Propeller S2 Series Master Air Screw Sabre Shaped blades 
Turnigy 3C 2200mAh discharge 20C 
Thrust results 
1632 Grams, 415 Watts, 37.6 Amps Grams/Watts 3.93 
1490 Grams, 356 Watts, 31.5 Amps Grams/Watts 4.18 
1231 Grams, 264 Watts, 23.1 Amps Grams/Watts 4.66 
1071 Grams, 214 Watts, 18.2 Amps Grams/Watts 5.00 
750 Grams, 139 Watts, 11.6 Amps Grams/Watts 5.39 

Not good flying weather this weekend but Thrust / Mass > 1 on a 1200 mm plane should be a flyer