I'm of the opinion that it's a tool and you should buy the cheapest tool; if you use it enough that it breaks, you buy a better tool. That being said, I recomme

I'm of the opinion that it's a tool and you should buy the cheapest tool; if you use it enough that it breaks, you buy a better tool. That being said, I recommend the Ender 3 Pro, to avoid cheap PSU fires. It's good enough for a beginner and dimensionally accurate enough for the work you seem to be doing. Octoprint hooks in just fine via USB, I've got it running on a Cubieboard2 even.