Looking to buy a new mac

[doricpride]

Hi I'm looking at buying a new imac, I was looking at 27" i5 with 1tb ssd, all I run is ps and lightroom cc, I don't want to buy something that I'd need to replace in a few years, I wonder if this system would be okay I currently have a 2010 imac, I can no longer upgrade the os nor ps 2020.  Hopefully someone can help.

[assause]

Apple devices are support OS update for about 6 to 7 years.
The final OS support is equivalent to 8 to 9 years.
It will be must replaced at that time.