1/ Be alert to the fact that because CAT2/3 protections are not in place, there is no signal protection, and that loc/gs signals may not be relied upon - be prepared to take out the autopilot and complete a manual landing. The ILS must be annotated as Autoland suitable.
2/ yes, and indeed it makes sense to operate to the lowest limits available, so that you don't have to go-around unnecessarily if the rvr drops.
3/ I tend to prefer manual landing off non precision approaches, and when outside autoland limits!