Andy, this is the exact kit I have. I'm not sure how it compares to the Special Hobby offering, but the interior is all resin and PE which may make for a tricky build. I've been unable to decide if I should do it RCN or Pacific Fleet. We'll see how the builds I have entered go and maybe I'll make a decision in the meantime.
As for decals, I know the Belcher Bits decals that I'll be using for this build includes some Firefly decals, but I'm not sure off the top of my head which version they are.