I have to choose props for this motors; They are for a Tarot 650 cuad for FPV  (expect 1.5-2 kgs) and 6s batteries (two 3s in series) ¿What do you think about this props 15.5**5.5 http://www.foxtechfpv.com/1555-carbon-fiber-propeller-cwccw-p-542.html or this one 14*4.7 SF? http://www.foxtechfpv.com/1447-carbon-fiber-propeller-cwccw-p-534.html 

the idea is calm long time fpv flight carrying a Gopro without gimbal.

Thank's