I would start with a quarter scale plane such as the WH 1/4 Edge as your first big aerobatic plane. The resoning is you will need to learn to "fly it to the ground". Unlike a floaty profile, the big scale planes do not land as light and they take a longer run-out after landing before stopping due to the higher weight. I started with a H9 1/4 scale Cap 232 and learned real quick what an elevator induced snap was ( too much elevator travel for a given speed), then got a Lanier 1.20 Edge and had a ball with it landing on our short runway . The quarter scales are a little cheaper to set-up than a bigger gasser and can be a good stepping stone. If you have to have a gasser, then get a WH Extra or Edge or even the new Yak coming out .