So after some much thinking I'm going back and download the mods & CC Mods that I had when I last played Skyrim, so far I'm doing it as I type this but sadly I'll have to go to work soon so a quick question: Will leaving after downloading a few mods affect me when I haven't organized it yet?

And for the main topic; How to do I decrease my chances of crashing when using the mod Menu? So far I've had to search for a few of the mods I've been using and it hasn't crashed yet, going from largest to smallest as I've been told by many and well to the folks that told me this thank you, I've been told that going searching for mods or looking at other mods won't cause the crashing but it's when you scroll down through the mods you downloaded that will cause the crashing as such any tips to prevent this or more like decrease the chance of it happening?

I don't want to be organizing my LO only for it to crash in the process.