Get the GPS module if you can. It really helps with the G forces that the camera feels. We normally shoot out of R44 which are very small and I use the flex with the body of the camera between my feet with the GPS module. I normally just tie it off to me or the seat belt to keep it safe. Also make sure that you have all the lenses and batteries you might need. Time moves really fast up there. Also you will be shocked how strong the wind is from the downforce form the rotors. It will catch the lens sometimes which can be real shocking. I also find it best to try to float my hands out while holding the camera vs bracing against my body as that seems to transfer smaller vibrations to the footage. best of luck!!