Well, two suggestions you could do for having so much custom content. Either you can organize your downloads (
http://nene.modthesims2.com/wiki.php?title=Game_Help:Organizing_Custom_Content) or find a support group, lol. I probably need to do that too. I'm addicted to downloading!
You know, also (you probably already know this), but you can build your own collections while you're already in game.