The Mosquito Motor Harness by Swedish AeroSports . Radne Racket 120 engine. Folding prop may be available. Great value given the state of the Aussie dollar. Similar concept to the Mosquito, except you fly seated.
Advantages are comfort and ease of control, with minimal drag penalty.
The Booster from Pegasus Aviation . Radne Raket engine. A very neat trike for a hang glider. In Australia, at present, the Hang Gliding Federation allows its members to fly sub-70kg aircraft, both powered and unpowered, without registration of the aircraft. You will require a powered hang gliding endorsement, however.