I wouldn't expect an Apple product to last that long… This is from my personal experience and also family members who tried Apple, so your mileage may vary, I just wouldn't trust it.

Ignoring that though, if work machine means an Excel machine, then it's probably overspending IMO. If work machine means workstation, then you'd probably rather want one of the >1.6k models with more working memory… or just don't go Apple.