MakerBot Print is our newest print-prepration software, which supports native CAD files and STL assemblies,
allows you to interact with all your printers via the Cloud, and many other exciting new features.
Haha, I think you are in good company, with many of the 32 bit boards taking advantage of Smoothieware (and maybe single digit percentages being actual Smoothieboards). My preference is for Marlin since that's what I know a bit about setting up (but is just a preference). The screen you linked looks cool but costs more than the board, so being cheap as I am, would probably skip that and go with the basic GLCD like the one I likely fried (also fewer tears when I eventually break it or it fails on it's own). Before I found the SKR 1.1, I had the MKS 1.3 in my sights and just happened on the SKR at Amazon. The SKR has an onboard microSD, and important for myself, the stepstick support, but otherwise looks about the same as the MKS 1.3 (I want to use the TMC drivers since I already have some collecting dust).
Your setup sounds like what I should have when I'm done (again) - I was installing and tweaking a new printed effector for the V6, and was about done, but had to troubleshoot my 3Dtouch probe, when my wrist brushed against the bezel of the GLCD and the rest is history. I'm interested in the adjustable tensioner carriages you mentioned, do you have a link for those? Thanks.