I've archived two clean installs and saved them in various manners.
May can also perform a rollback to a previous Skyrim version online, via Steam. It's a bit more complex and requires a bit of research. Here is a link:
Guide - How to rollback your skyrim after update - Unbreak your prefered skse mods
I am a "mod addict". I like to create them in my spare time and I routinely run 800+ mod builds on various machines. With some newly merged releases I've trimmed my list down to 640 mods. It is spectacular.
Using Vortex, I've come up with a means to "fast install" 600-800 mods (if they have already been routinely installed once) in about 2 hours. This involves specifying the load order for each mod linked to the prior mod. If I *GANK* a large build, I can:
1) Disable all mods
2) Close Vortex
3) Completely uninstall and reinstall Skyrim
4) Test Skyrim and generate the proper registry entries (The initial start scene at least once then save.)
5) Restart Vortex
6) Enable the mods in groups or all at once depending on the extent the deployment has been configured for the multiple groups
7) Reload all tools (LOOT, Wrye Bash, Creation Kit, Creation Kit custom fixes, SSEDit and cleaner)
8) Address custom install and setup (Engine fix parms, SKSE, ENBs and such)
9) Regenerate animations and everything involved with that
10) Start the game
11) Run YSMIR script (Nexus) to bypass the beginning and then do open world exploring based on the mods loaded
I highly recommend Mihail's monsters packs and the new release of "Immersive Creatures". Something horrible is always happening in my builds...
I have a free period for gaming in the AM, then the rest of the day is family and life. But man, I love that time... :D
I am not planning on downloading this version, at least not for a few years. We'll see. I'm having too much fun and now VR is getting to be amazing.
Wow. I only use 2-3 scenery mods, and the armory mod near that first town.