Yes i would like the caco patch.Sfo 2.5b no grass version contains everything from sfo 2.5b minus the grass because i'm using the other grass combination.
you can merge them just fine. Just run ReLinker at the end of the guide to remake the scripts for LOTD so that it recognises the merge. This has been tested.
you shouldn't have two of these RSChildren - Merged.espRSChildren - Complete.esp the RS children merge should be renamed to RSChildren_CompleteUSKP.esp and why would you say it's messed up ? just run LOOT and it's ok
i installed claralux with RS and ELFX exteriors so no need to remove from the CR. You will need a few patches and some that jdsmith2816 provided and some conflict resolving