I am going to try those, for the H'uhk I am going to be looking at the 5 inch scale so I can get the height, as for the Stenax Warrior (I still dont know if there is anything out there that could be built on, I was thinking gargoyle figure base, but the Stenax Warrior is Skiny but Muscular, some of these are going to be a labor of love, others should come together nicely).
Admiral Tower should be easy enough with the New Imperials, and the eye from C-3PO with Salacious Crumb, and scarf from a G.I. joe or Han Solo (Sandstorm scene) and hat from Lt Jundland, the only thing is trying to get the likeness right headwise.