Andy, visited your site which led to finding out LZ120 was shortest Zeppelin built at 396' which at 1:100 is still nearly 4' actual length - and even longer, closer to 7' at 1/56 scale (appx. 28 mm scale). Which leads to: Holy Heck! Even foreshortened to half length is still a 3 1/2' model!
Hmm, maybe a model of just the gondola with a little bit of the balloon above is in order. Do you really plan to build one?
(I might do something for my WWI German East Africa as a what if scenario - but seriously foreshortened for sure - and in 15 mm.)
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And Marianas Gamer, thanks for the reply.