I noticed UaBS has 4 pregens included, but I'm going to probably need more. One idea I had was to use the beginners box characters as well. Do you think that would work?

There are a few subtle differences but you should be good to go!

http://www.fantasyflightgames.com/edge_minisite_sec.asp?eidm=232&esem=4

This link not only has the downloadable version of Shadows of a Black Sun, but it also includes 2 additional pregen characters that were not included with Shadows of a Black Sun that were created for this adventure!

Enjoy!

Yeah, I realized that about 6 hrs. after my OP. Thanks for the direct link. Now do I try to get the Wookiee and Trandoshan to work together