You'll have a blast. The Decathlon is an excellent aircraft for initial aerobatics training...though admittedly I would prefer a cs prop. As far as not being up front and close to the instruments...my first ever flight in a J-3 Cub was in the back and I was with a non tailwheel pilot up front and it was just a non problem. I now prefer flying the Cub from the back (it's the only way you are allowed to fly it solo) . With tailwheel a/c it is easier to sense yaw on t/o and landings than from the front.
I regularly fly a Great Lakes biplane which has about the same performance as a Super Decathlon and it is a delight to fly acro in.
