In order to install Sky UI, you will have to download and install SKSE64 (Skyrim Script Extender 64) the script extender for Skyrim Special Edition. A SkyProc patch is a Skyrim plugin which is generated automatically by predefined rules from the content found in your load order. Manual installations of Requiem and Mod Organizer 1 are not officially supported. Requiem is a project with the goal of turning Skyrim into a better roleplaying experience by making game more immersive, semi-realistic and coherent, with the tend to find a compromiss between old school mechanics and more modern approaches. Living Skyrim is the name of one of the biggest modlists for Skyrim SE (the newer Special Edition) and it is also the one, that promises the abovementioned 800 mods in their list.
Its a huge waste of time, just download skyrim SE, install requiem (or YASH) and whatever other gameplay affecting mods from there.