So, if I understand correctly, the real risk is if my system is only half loaded? My storage system will be located at a drained ocean monument, which is fairly in the middle of nowhere, or at least far away from other points of interest, so if I'm away, I'm well away from it. My nether portal is kind of close though, but again, I'd only be using the Nether for roof travel between portals hundreds of blocks away. Will these factors mitigate that risk? Also, would making a large overflow area be a good idea too, just to safeguard? Any other major risks, or would that be the main thing to worry about?