I wouldn’t let multicolor be a barrier for entry for you. It’s something that can technically be added later*, but it is much more difficult to convert a printer to be able to work with engineering materials. Personally speaking, I also wouldn’t mix multicolor and engineering materials ABS is pretty cheap but anything that would need a hardened nozzle (like glass or carbon fiber reinforced filaments) is almost too expensive to waste purging. Plus, if I’m remembering correctly, color swapped prints aren’t quite as strong structurally as monofilament prints.

* technically speaking as long as your printer can run Klipper, there are community projects like Box Turtle or Enraged Rabbit that are meant for more general use (if you’re okay tinkering with things) if Elegoo never gets around to releasing their multicolor unit.