Really, it is unaffordable for almost anyone to use sandalwood e.o. for soap. And not worth it, b/c of what the lye might do to it.
Believe me, I am with you on the yearning, but it it is not practical. IMO, it is better to find a good FO that comes as close as close to possible to meeting your requirements (that is not easy either, my current FO testing total is in the 30's, and I will probably keep going whenever there is a new one.)