My 2c about the original Jabba: as much as I could love the idea (“You are a wonderful human being!”), we see him in Episode VI (and Episode I as well), so following a logical path, it can’t be human.

Unless some wizard put a spell on him after EP I, and then he managed to return to his original form before EP VI - even if, I must admit, if I can chose, I’d prefer to be a not-so-handsome human instead of Pizza-the-Hut or something… 😄

Back on topic: if you want to partecipate in the project, we could join the force and share our works.