(Is there a more appropriate community to post this in?) Thank you in advance for any advice/help!

I've come across this build on PC part picker, but I was hoping someone could help me customize it a bit better for my needs. I'm going to be streaming, gaming, and editing videos on this machine.

https://ca.pcpartpicker.com/guide/ZpkcCJ/enthusiast-amd-gamingstreaming-build

I would like to future-proof the PC as much as I reasonably can (10-15 years' usage would be great).

My budget is probably around 2-3k CAD? I am over extending myself slightly, but I have used my PC daily for 12 years, and I figure if not now, when?

The only other thing I might consider is new monitors, but otherwise, I'll be reusing all my peripherals as those are more recently upgraded!

I was also thinking a better Nvidia card might be worthwhile? The main thing is I'm not familiar with how the parts work in terms of compatibility. That and electrical usage/needs from the power supply

Edit: are prebuilts any good nowadays? I'm not opposed to the idea. I know I could figure out assembly myself, but if there's something worthwhile, I wouldn't be opposed either.

https://www.memoryexpress.com/Category/DesktopComputers?FilterID=2e413559-0182-1014-4547-d1dbca418ecd

Edit: Just want to say thank you for all the helpful advice and information. I ended up finding a PC that met my needs and then some!