Very nice; congrats on your vintage SW acquisitions.
I should have quantified a bit more on my comment regarding the original 12 backs and that $5K number. I was talking about the main stream, non-variant/non-rare unique ones that anyone could have had a chance of getting like the normal Jawa robe version, Stormtrooper, Luke, Darth, Han, Leai, Obi Wan, SandPeople, Chewbacca, etc.
The DT figures you mention are extraordinary in expense for sure and obviously were not being factored into my calculation. I did not have these figures when I was a kid, so I would certainly not worry about getting them now especially with their respective price tags.
I don't even remember seeing a plastic cape Jawa back in the 70's. I actually had two Jawas as a kid and they were both the regular more common robe version.
Here is kind of what I had in mind. Raw would obviously be cheaper as you point out.
AFA 80 12 Back Chewbacca