Hello,
my 13-year-old computer is starting to show its age (13 years) and I am looking for a new one. I edit short videos with Davinci Resolve (maximum 6 minutes and 4K being the highest resolution) for YouTube and social media and do some simple Fusion effects. I also edit my photos with Affinity Photo and RAW with DxO PhotoLab. All these edits are for my personal use (not making a living of it)
I would like to purchase the Mac mini M4 16GB RAM/256GB SSD because of its relatively low price and the many positive reviews.

I am going to connect an external SSD to move my movies, photos, and anything that is not an application.
The only thing that worries me is the 256GB Internal SSD (even though on my old Windows PC the Internal SSD is also 256GB during its 13 years life) I know of the possibility of transferring the Mac Mini Home folder to the external SSD but not being a tech-savvy person and I want to keep it simple so I will not go this route.

People claim that the internal 512GB SSD is faster than the 256GB. I guess that it is true but is it something that matters in real daily use or makes a huge difference? Is it worth the $200 difference?

Thank you very much