The Gripen is not a difficult model to fly, its just a little different from a normal model. The main thing I would do on the test flight is get up high and find out what trim setting you need for the correct approach speed, mine has about 5 clicks up at 145mm cg, and the plane flys at 10-15 degrees nose up. On the approach, if your nose is any where near level, you have way to much speed, probably 90mph or so and you will not be able to bleed off this kind of speed in the flare. The Gripen on approach should look something like a full scale F-18, which takes some getting used to because the nose is so high and the plane is flying so slowly.
You are going to like the Gripen, I have 90 flights on mine now, and it is one of my all time favorite models.

Rob B.