The Pro is a perfectly valid choice for work which fits its working areas, and tooling and feeds and speeds which suit the material you are cutting.
Which tooling you get depends on what sort of material you are cutting, how you are approaching that cutting, and the toolpaths and finish you need.
See:
for a bit on this, and you may find:
of interest.
LEDs are something which a lot of folks like — I do w/o, but arguably, I’m waiting for an official kit for the Pro or my SO3.
A Raspberry Pi can be quite nice for running Carbide Motion and controlling the machine — lengthy thread here:
I use one, though the tablet setup (Rasped v3) is a bit clunky — currently considering a CutiPi instead.
Some folks do cameras — I suppose if you need to document cuts/make contents it helps.