It depends on what you plan to specialize in, or what areas you are interested in playing around with. The industry is big. That setup will work for some projects but isn’t ideal for others.
I personally value the costs and productivity advantages of a full desktop rig. It gives you the flexibility to optimize it for new project work. Also, having multimonitor (more than 2) support is a tremendous time saver.
In this industry, time is your currency. Everything seemingly takes forever and there’s never enough time.