Replying to DIN

im sorry but i searched and coudnt find it, (which i thought was weird). im 5,7ish skiing anthems with look px12 ti's with a boot sole of 316. I ski almost completly park and i need to figure out my DIN setting, i had them at 9 (i knew it was to high) but i switched from snowboarding so i didnt realize then effectiveness of your skis popping out. And now my knees are starting to feel the pain.

i want a fairly high setting for my weight, i was thinking around 8 but i really have no idea, what do you guys think?