Everyone is right. Build the kit according to the instructions. I have done a couple things regarding the fins, as they they will come off upon landing. I have poked pinholes along where the root edge will be epoxied. I then do fairly thick fillets. I also go as far as tip-to-tip fiberglassing to make sure that those fins stay on. I had two Auras in which I had done this. I lost both of them. I recently bought one off another rocketeer which was built very well. I am looking to fly it on an F motor.
With my experiences as far as recovery of the Aura, if you do the steps I mentioned above, you can get away with a streamer recovery no matter what motor you use. If you do not go with the fiberglassing, I would probably use a small chute, like a 9 or 12 inch chute. Even though the nosecone is heavy, the Aura WILL drift.
Good luck with your Aura. I cannot wait to see pictures of it after it is built and in flight.