Replying to Help with DINs

Hello everyone. I am a park/all mountain skier and also an instructor from southern ontario. I am 6’0” (183cm) and 225lbs (102kg). I was originally rocking a 7 DIN for a level 2 skier, but I landed switch and pre ejected on my attack 13s and bent the brake wayyyy forward. So then I decided to bump it to a 8 DIN where I haven’t had that issue since, but yesterday I was skiing 15cm of powder and did a 180 to nose butter and ejected. What setting could you guys recommend for me? Im not that great in the park, just some rails, and 1s and 3s of small jumps.