@Eyal , sorry for the delay. Here is some additional information regarding Stinger FPV:
https://docs.modalai.com/stinger-vision-datasheet/
base weight with battery : ~570g
maximum thrust per motor : 650g @ 15V, 2600g total theoretical
theoretical max thrust to weight ratio: 4.5:1, lots of extra margin, but if you add a LOT of weight, will need to check motor temps, etc.
CAD model for stinger (may be slightly outdated) :
https://forum.modalai.com/topic/5180/looking-stinger-fpv-cad-models -- you can attach your payload to carbon fiber
I think that Stinger will be easier to tune up with additional payload because of more responsive and powerful propulsion system than Starling 2.
i dont know what your sensor package is so, it is hard to comment about which platform is better. Starling 2 has landing gear that offsets it from the floor. Stringer is much lower to the ground.
Alex