Regarding the Balthazar notes, if I remember correctly they are in the initial crypt portion of the Shar Temple in the auxiliary sections. I think they are meant to be hints for the picture puzzle that everyone brute forces.
I could only find Ketheric's journals 1-3 in there. I must be missing something obvious, but I swear to god I turned Moonrise and Temple of Shar upside down searching for Balthazar's Note nr1 and I still can't find it.
If anyone has access to all of Balthazar's NR1 note, can anyone share a full transcript please? Information on this on the internet is non-existant based on my search.