Why don't you check out the line of Chipmunks from Apache Aviation.
I have built two of them and they are excellent.

Very similar size, or 1/5 (81" ).

They have both the retract and fixed gear versions of the Art Scholl Super Chipmunk, the Pepsi Chipmunk and the original DH Chipmunk.

I can highly recommend these kits. If you want to see how they build, check out this thread http://www.rcuniverse.com/forum/1%2F...2029187/tm.htm

Ari