Looking good!
As for the parts bundle in the shop You 5 options:
- Mini-Rambo bundle - Good basic controller
- Rambo bundle - Allows much more expandability, and is a better option if you want to be able to add other features.
- Rambo dual endstop bundle - Same as above, but allows you to use dual endstops for auto squaring. Much more advanced setup, so not for beginner.
4&5. Parts bundles without a controller so you can use a different controller if you want
Also, if you want to run it like your ender, you will need to buy the “Full Graphic Smart Controller” which has a SD card slot, and lets you run it without hooking it to a PC (This is the way I run mine, and my ender 3 as well)
As for a server setup for either or both, a raspberry pi should work. I’ve been looking at Jeffeb3’s v1pi image, thinking it was something I’d like to try.
https://jeffeb3.github.io/v1pi/