I have never done an unskinned kit for myself, but the local hobby shop had a Fokker Tri-Plane (#204), a PBY(#2004), and a Stuka(#1002), without tissue hanging from the ceiling.
They looked awsomwe!!! It was always good motivation for me to do the best possible job with the balsa airframe construction phase as possible.
I would discourage you from thinking of it in terms of true, internal-anatomical, scale precision. There is absolutely nothing wrong with that. In fact, if you have the time to do so, I commend, and encourage you!
If that's something that you're after, you will probably have to scratch-build in a mixed media. However; these balsa kits have an artistic beauty unto themselves.
Best of luck on your build, whichever path you decide upon.