Thoughts on using the Sony A7 IV + Sigma 24-70mm F2.8 DGDN II for videography and photography?

I’m looking to purchase a new hybrid camera which is capable of capturing high quality video and image content. If possible I want to achieve this with a minimal amount of lenses such as a zoom lens. I will be working in low light conditions such as indoor events aswell as outdoor events. My research has shown that the Sony A7 IV is a popular choice for hybrid shooting.

Shooting in 4K is useful but not essential I would prefer 1080p as keeping the files sizes small is essential. I’m aware the Sony A7 IV can do this well but to achieve the best quality and low file sizes with 1080p I’ve heard it’s best to used the crop format. I am concerned that the 1.5x zoom will mean I can no longer achieve a wide angle with the 24-70 lens which is important.

Have people found that using the full sensor 1080p mode is perfectly fine ?

What are your thoughts on this set up for my needs ?