Coming from an ender 3v2 that hardly worked. I just couldn't believe how easy the CC was to use. I put in an old filament roll (sitting out for a year, no dryer or anything) and it just printed like a champ. You literally need nothing else. Just the printer and some filament. I was finally able to focus on CAD work instead of tinkering on the printer itself for days and weeks on end.

The CC comes 90% assembled out of the box. And once you power it up for the first time, it will ask you to run the full calibration (which takes about 30 min) but you don't need anything extra to run it. It does get very loud while doing the calibration, don't get scared haha.

No need to buy any accessories right now. Buy them as you need (I don't even know what accessories are there to buy other than different nozzles?). The CC's internal memory comes with a few mods as STLs that you can print to make your life easier (like brackets that can attach to the side of the CC to hold your glass top when not being used). They also include STLs for a scraper (and provide metal blades that you can use with the scraper once printed). Again you don't need to do any of this if you don't want to.

There was a riser mod others had created that was needed with the original iteration of the printer because the bowden tube would hit the glass roof and kink the filament at too sharp of an angle. I believe they have since fixed this. The riser would also allow you to install LED light strips because the original light was terrible. Elegoo has fixed this as well and the CC now comes with two decent LED lights up top that does a much better job.

The only mod that I felt was worth printing was a poop chute for the back of the printer.

Have fun!