Restart fresh, then follow this advice/tip always.
Tip: Before you begin installing any new mod, make a backup of that file. When you install any new item use a trainer to spawn (if spawnable) to view, use, store and save mod. Also if there are mods you can't access till later in the game, download a 100% save file to test all your new mods.
This all takes time, but better to test now than having something crashing your pc and either suspecting newest item is cause or something you might not have even wanted many mod dwnlds ago causing the problem. Again, I stress, once you have a save file you intend to keep, keep a temp back up of your files.
GL