Just let me know which of these would be most useful to you.
The digital version of al-Maktabah al-Syamilah (Shamela) includes a scanned copy of the original Jawi text. You can extract Jilid 4 using their desktop software. This is legal because it is a digitization of a public domain manuscript. Kitab Sairus Salikin Jilid 4 Pdf
Sairus Salikin is not in Arabic nor in Rumi (Latin) script. It is . Fortunately, Jawi is phonetic. A week of practice is enough to read it slowly. Just let me know which of these would be most useful to you