One other question, since you have this flipping over when you try to fly it - do you have the right props on the right motors?
My first quad had the motors set to spin inward, and so the props had to be set to spin in that direction. The second quad I bought, a friend had built it and put it with the motors spinning outward. I put the props on like I would with my original quad, tried to throttle up, and it kept flipping. When I finally looked at it in Betaflight and saw the direction, I switched the props around, and voila, the quad flew smoothly.