The AeroStar is a super plane and if set up according to the instructions you won't have any problems. I have taught on more of them then I care to count and I still own one. I also have the AeroBat and they are also great. With a 40 on the Aero Star you will be able to do some aerobatics when the time comes, just don't rush it.
Check with your instructor and see if he would mind you taxing it around WITHOUT the wing, that way it doesn't get airborn. But that still doesn't mean it won't CRASH if you aren't carefull.
If you do this, put something over the wing saddles so fuel, dirt etc. doesn't get inside, we use an old plastic bag. ENJOY!!!!!