My printer is limited to 150x150mm but model can be expanded. I don't recommend smaller size if you are planning to use RGB lights.

Here's some tips:

Bed and Inner section:
Was printed with better quality at 0.18mm layer high

Inner section:
Fast print at 0.4mm

Tolerances:
We all know printers have different tolerances, some sandpaper polishing might be necessary on some corners.

Printer:
Flashforge Adventurer 3

Rafts:
No

Supports:
No

Resolution:
1.8mm + 0.4mm (optional)

Infill:
15%

Filament:
Generic Black PLA + Silk white

LED's:
I used this but there's many options available