Hiya,
Try placing Environment 4.7 last (very bottom as it shows in jsgme)
Besides IRAI and foot step mod i use all those mods and many more
As i type i recall my crashes were due to the climate data used in Environment 4.x
You could check W_clears posts for an altered climate.tga (think it's a tga) or just try changing say 4.5 climate into the 4.7 etc etc
You can pm a guy in the Environment thread for a fixed climate.tga
just go have a squint as i can't rem is name offhand