And.... things just worked nicely. Spiders spawned where they were supposed to spawn, they wandered about where they were supposed to wander about, the lighting did what it was supposed to do in this cave system.
I did notice a slight bug in rendering of animations when they are scaled, but I think I'll be able to sort that out without too much hassle. Right now, I'm just enjoying things working nicely. Oh, and I tested on the actual handset, and nothing has impacted the framerate, so all still working nicely.