@Tin_Falcon gave a great recommendation here. FT kits are not anywhere near the 15min assembly of a JGAurora A5-style printer. You are looking at a couple of orders of magnitude difference in time to get an FT kit going. I fully agree on all of that post... with one caveat.
If you, like myself, are much more interested in the ins and outs of a 3d printer, and are ok with spending lots of time to really learn EVERYTHING about the machine before getting any prints out of it, then an FT kit is a great way to go.
To me, there are two primary paths, if you want to print things vs learn about 3D printers (and then also print things). Both are perfectly viable and awesome approaches, but the recommendation on where to start will be different. I think a lot of people are starting with an Ender 3, then want to dig deeper and build a kit printer or source their own parts to build a second machine. So, choose your own adventure... Best of luck!