Wow. I thought mine was big. 1.438 files that are 1.60gb in overall size. I only have 2 mods, the no relationship culling mod and the quick walking the dog mod. The rest are all build items and objects. No CAS items though. I realised the other day that I haven't even downloaded recolors of any CAS items which is unusual for me, regarding my cc habits with the earlier versions of the Sims.
I don't have any folders in my mods folder is that any way beneficial regarding game performance?
But on the other hand, I have copy of everything I have installed tucked away in another location, sorted into folders, still zipped or rar'ed (if they came that way) with images saved along as well so I know what is what.