gaming and video editing pc

Hi friends, i'm looking for good pc for 4k video editing without any lag. currently i'm using macbook air 2014 model . i'm using davinci resolve for editing 4k footages. i'm planning to upgrade . which will be better for my requirement : macbookair (retina) 2019 model or imac 21.5 (retina 4k)...

Hello. I need a monitor to my gtx 1060 3gb, i5 7400, 16 ram pc. By budget is 350$. It would be perfect with a 2k, ips 144hz monitor, but I can downgrade on one or two of the specs. I need the monitor both for gaming and photo editing, 50/50. Thanks!