I'd download this just for Jaster. But don't forget the yellow on his chestplate/pauldrons. Glad someone else remembers this guy.
Also best reference I could find for The Mandalorian
I actually wanted something similar to this myself so let me help you out here;
Dark Forces II Skin Pack - JKHub
Dark Forces 2 Saber Pack - JKHub
Qu Rahn - JKHub
These three mods pretty much include everything you're looking for, but you'll probably have to do some edits yourself to make it...
Too bad about this model, I'd love to use it but it turns invisible at close range and half visible at long range when looking at someone else using it.