Cash pros usually play at less tables. Most likely they want to have an option for 12 tables. With good size...You can use one monitor with no problem. For example 2560 x 1440, 27 inches is enough for 12 tables in all sites. The tables are big enough, you can see everything. You can use one "big" monitor, TV. You can use this also for movies, gaming. Or you can use two monitors for 6 tables each (optionally, not necessary always)). Some use three or four monitors. They make triangle or quadrant. And they can see everything without turning their heads. They can see everything only "with the eyes".
The laptop is suitable only for Zoom, fast poker.