I do have the perfect bike for you ... a 2007 / 08 Dahon 20 inch frame size Cadenza with 16 speeds.
http://www.thorusa.com/dahon/2007/cadenza.htm sells for 539.05 shipped to yur door it weighs 27 lbs thats almost 10 lbs lighter than the Beachcruiser ..completely different bike ..lol

This is a 07 but in all reality its an 08 ......08 were not brought into the US ( except one speeds and Internal 8 speeds) to give you an idea what good deal that is the 09 version has a msrp of 999 dlr !!!
I only have 20 inchers left no medium or small ..

Thanks Thor