Hey Dave
if you want a good Graf Zeppelin kit, i'd go with the H-P Models offering. it's resin, 1/700 scale. i think it sells for around $160. if you have any questions on her, or need any plans or pictures, please let me know. Flugzeugtrager Graf Zeppelin is my specialty.
also here is a link to my Graf Zeppelin website, here you'll find tons of info and pics of her, including pics of her sinking.
http://www.geocities.com/grafzeppelintrager/index.html
best regards,
joe