To be honest I'm not 100% sure missing textures had anything to do with hitting the RAM limit, but my crashes were always a result of hitting over 3GB of RAM usage. Since I last posted, I have downloaded optimized HRDLC as loose files, DISABLED the HRDLC esps, and put my old texture configuration over the top of the optimized HRDLC files. I also disabled more interactive items. Unfortunately I can't say if this actually helped at all, I'm loading into Riverwood at 2.1GB, some areas are more RAM intensive than others (Windhelm getting me up to 2.6GB) so if anyone knows the best spot to see if I'm still going to hit the RAM limit without having to play for hours, let me know.