Thanks for the replies, the decathlon looks like a fine plane for aerobatics, plus I do plan to go tailwheel when I get back from the first phase and start the ATPL.
The only downside i can see is that once I have completed the AOPA certificate, lets say on the decathlon, I will not be able to show off my new skills to my friends until I get back from the US and finish the tailwheel conversion!
I've heard of an operator in Shoreham that offers a slingsby, but have also heard it is underpowered like the C152.
Thanks for your help