Sorry for my poor english, I am a froggy

I want to assemble dbm forged irons with recoil 680 F4 shaft (82g)

Specificities : standard graphite length (37,5 for a 6 iron), grip winn dri tac 20th anniversary (48g)

What swingweight should I get ? I made a calcul and I obtained C9… Can you confirm ?

I would like D3. Can I add more than 6 grams in the hosel ?

Thank a lot for your answer