Honestly, Nigh? I consider myself a pretty Mod hungry person in games by Bethesda, as they just make the game better.
But 84 of them!? I bet since you took them from 'several best mods' lists, those lists didn't take Mod Conflict into account?
Many mods for Skyrim are pretty much doing the same thing but in different ways and with different explanations...When that happens it's like trying to have 2 trains on the same track driving in opposite directions towards the same destinations...A collision happens no matter you like it or not.
Since you installed 84 of them...Many, if not all of them, all at the same time, without logging in in between to check if they worked properly? My only advice to you is to do a complete uninstall of Skyrim, and carefully check each mod to make sure they don't Conflict with any other mods. As it is now? You've pretty much nuked your Skyrim game, I have no idea which mods you've installed, nor if they conflict or not, and with 84 of them? It could be any 2...Or perhaps there're more than 2...Perhaps several dusin pairings that all conflict with one another? There's no way to know for sure.
So yeah, to make the game playable? An uninstall/reinstall is really the only reasonable option I can come up with at this point.
For future reference? It's better to take hours installing mods, than do it all at once and end up with an unplayable game...Take your time, research the mods, and make sure they're clear of conflicts with other mods you're considering to install.