Any recommendations to make this rig more ergonomic?

I really love the image I get out of the s5ii, but as someone who used to always shoot on a gh5, I find this set up to be a little cumbersome. Not sure if it's just having a larger lens, or not as big of a hand grip. I was wondering if there's anything I can add or remove to make this rig more balanced to use?

I really love the image I get out of the s5ii, but as someone who used to always shoot on a gh5, I find this set up to be a little cumbersome. Not sure if it's just having a larger lens, or not as big of a hand grip. I was wondering if there's anything I can add or remove to make this rig more balanced to use?