thank youBatteries - get 2 or 3 more
Bumper cage - unless you are flying indoors or doing very close building inspections it is frivolous.
DY5 charger - OK
Extra props - yes
UV filter - yes, more for protection of camera optics
ND filters - only if you plan to do cinematography, if you are just doing photos for inspections they are not needed.
Spare ST-16S battery - yes
... so pretty much everything....
Is there any way to know how Many charges a battery has, as well as how many hours the drone has flown?......I"m buying everything new but... just because