Vlogging Lens for EOS R (with & without gimbal) - need help


I'm New Here
Sep 13, 2012
Hi Guys,
Just purchased my EOS R together with Tamron 24-70 F2.8 G2.
I would like to seek the advice and recommendations for a wider full frame lens (Canon or Third party ) which I can use for causal Vlogging & Video recording of Street Interview.
Key consideration is the weight and portability of my camera setup.
( EOS R - 660g, Ring Converter - 110g, Microphone 110g)
1) With assistance of Gimbal (max load of camera gear of 2.0KG ?)
2) Without Gimbal
I look forward to your comments & suggestions.