www.profili2.com for a program that'll set you up with more airfoils than you ever knew existed. As for old timer designs start with google and the keywords old timer model airplanes and get a feel for what you want. Also don't be afraid to seach the Vintage and Old Timer forum here at RCU for some back threads about old time free flight models converted to RC and ask for suggestions and, most importantly, pictures. There's literally hundreds of really cool looking old cabin designs.

With the passing of the old Model Builder Magazine and the seemingly loss of John Pond's plan service we lost a great source of updated plans for old timers. It's harder to find this stuff out now and that's a true shame as there were some great classic designs.

In particular a really nice one is the Dennyplane. A quick google turned up this site for a teaser....

http://www.ctie.monash.edu.au/hargrave/dennyplane.html

There's also a scale plans guy out in Cali that makes laser cut short kits for a lot of old timers. His name escapes me for the moment....