Lower kv rating and larger props generally are more effective. I muself have the 800kv 2216 motors arriving in a few days and i will report back to you when i test then out with my 10 inch graupners.
i run stock dji motors now with the same 10 inch props, the craft weighs 1450 kg and i fly for 10 mins using 3000mah out of the 4000 mah lipo pack.