CPU: Good starting point, and that'll continue to be useful far afield of web/email tasks (light to moderate non-simulator gaming, word processing, photoshop, etc.)
Motherboard: You don't need Z170M for a non-gaming i3, so I agree with the B150M choice (though if you only need one disk you might even consider going Mini ITX and get an "I" like B150I if that exists)
Memory: 16 GB is great, even for web and video and email you need that to have a great experience imo ;p
Storage: if you can tolerate the potential risk of data loss after long periods of powered off that comes with the EVO, go f…