There are only two will types recognized in Louisiana: the notarial will and the olographic. The olographic will MUST be entirely handwritten by the person making the will, dated, and signed. Any type of “fill in the blank” type of will would be totally invalid. Also, a handwritten will runs the risk of being attacked and also must be proven in court. That is, someone by testimony or affidavit must affirm it was the deceased’s handwriting. There are just too many things that can go wrong.
A notarial will, on the other hand, is self-proving. However, it MUST be signed in front of a notary and two witnesses and everyone must see each other sign. Also, assuming it is prepared by a lawyer, all the issues like forced heirship that are peculiar to Louisiana will be addressed.