I thought this might interest some who are buried in screens, especially people who like to stay portable. I went through variations of multiple USB screens, two curved 4k displays around my desk (not portable) and everything in between. I realised that concentrating on just one screen, simply a 15.4 inch laptop display @1366x768 ! I actually made the most money keeping my nose to the grindstone scalping. More is often good but one must balance your brain's ability to run the marathon of the trading day. It was about perfect for my eyes without glasses (somewhat long-sighted). I just alt-tab between a couple of chart timeframes instead of having them all up at once. I now also run a native 1080p projector also playing mostly CNBC though I do throw some charts up in the morning when doing my levels and whatnot. Bluetooth speakers under it. The projector is about 140 inches and gives me the running news in my peripheral vision and exercises my eyes when I look up at the wall a good few feet away. The room is not as dark as it looks in the photos. This is an elegant as I can make it. Laptop, lazy-boy sofa chair and projector for news and some background noise.
I scalp off a 5 minute chart. No DOM or anything. You can only zoom out so much on Ninja, back to the 27th or so today so the HTF charts are needed and on other platforms it all becomes microscopic. I trade of a few selected prior horizontal levels and trend lines that I draw along with RTH/ETH vwaps. You have to keep looking left, alt-tab and you have all you need for a few seconds in the higher timeframe, then back to the 5 minute entry chart. You also want to see perhaps the very institutional 200 SMA on the daily chart (coming into play this week perhaps near 2858), yes you can use an alternative time-frame indicator however may as well see what other see. I found with lots of screen acreage I tended to look away from my entry chart for too long, often mid trade, in the mistaken belief that I was aware of more than I really was.