I was going to suggest Cuban Eights and stall turns/wing-overs/hammerheads as well. The Immelmann and Split-S turns won't be very difficult to master, either.

While most new pilots think of basic inside loops as an easy manuever, they end up with egg-shaped loops. Focus on doing big, high, large, round loops where your entry and exit lines are the same height. You can also try a few outside loops with your Alpha, but they probably won't be too pretty.

Just flying an oval around your field while inverted can be quite a handful. It could pretty challenging with your Alpha, but most advanced aerobatics involve a lot of inverted flight, so you may as well start practicing now.