You are way high for almost anything but a company website that has an engineering team dedicated to it. Yes, there are exceptions (my blog could handle orders

You are way high for almost anything but a company website that has an engineering team dedicated to it. Yes, there are exceptions (my blog could handle orders of magnitude higher traffic than that, but I had a multi-tier CDN in front of it with 100% full page caching. Did it need it, no, but it was fun to setup). Typically speaking, most personal / non-professional sites going down from a HoD on HN probably got under 500 concurrent requests.