Can you give a better description of your overall project? You mentioned having the displays scrolling numbers, stock information, and breaking news, how are you going to be getting that information into the arduino? That can be done using the USB connection or a serial cable through a computer, but if you want to use bluetooth or want to pull the information directly off a website you might want a controller that has bluetooth/wifi built-in. How fast do you need the information to scroll across the display? Using a single board to control that many LEDs means you can only update the displays about 4 times per second, so about 8 seconds to scroll across the display if it is 32 pixels wide, moving 1 pixel per step. If that is too slow, you may need to use a separate controller for each display panel. You also have to consider the amount of time your code will spend obtaining the information for the displays - any time spent in that portion of the code will slow down the scroll rate.
Since for now I have only ordered the LEDs and have not yet been able to understand what kind of board to use I can not give much technical information.
But I can say that:
1. The "news" will already be set up, they do not have to be taken in real time, but simply I have to think of long strips of text that continue to flow, slow enough to be read.
2. I was advised to program Arduino with the NeoPixel library.
Basically I have to understand which board to use to control these four strips in the most effective way possible and without having to deal with a very complex code.
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