Walking Calamity Bear Advice

Hey all. Looking for some advice on my Shaman Walking Calamity Bear build. Originally was following Captain Lances guide and have been in endgame awhile looking at other people's similar builds on Poe Ninja trying to push it further. Looking to add some more damage to the build since I think my survivability is okay. I have seen some people using Lunar Assault as an option and wasn't sure if that would be better to include or maybe swapping up some support gems. Also for my weapon would it be better to get one with gain as extra Physical or just pure % physical and flat physical instead? Any advice is appreciated.

https://poe.ninja/poe2/profile/ItalStalli0n-8062/character/ItalStallion