Both of our points are moot until the OP tries something. If the OP intends to have minimal server services then this can be achieved.
As I said legacy hardware, how will the user get by with a newer Gnu/Linux for the system? Try it!
I've said enough about this. Apparently, you have not experienced problems yet! This will not help the OP unless an install is attempted. See what happens!
As for compiling on this age of equipment. You can always perform builds on another system if time is the problem. Done all the time.
Personally, I would choose newer hardware.
Enough said, no more communications unless it's relative to the OP's thread topic.
Back on topic.
If you wish to continue this discussion then PM.