100% agree with the dual monitors.

Moved from a single 13" MacBook Pro screen -> a PC with a 27" monitor -> dual monitors -> triple monitors (43" + 32" +27").

I can't believe I ever did work on a single laptop screen as a student. Although likely overkill for a student, a triple monitor setup has increased my productivity at work tremendously.

I have considered a 4th monitor but I don't think it's necessary. Sometimes I have to alt-tab while working, but not enough to justify a 4th at the moment.