Clear and concise from eharding without a mention of a single pie!
I've trained in the US/RSA/France/UK - have no rating but do think that the AOPA syllabus is good starting point. (I hold a CAA Intermediate Aerobatics Formation Display Authorisation down to 30 feet with up to 4 in the formation - can lead it or be in it).
You need to find someone competent to teach you and he/she might not necessarily hold an insructor rating if you hold a PPL - today, anyway!
As for renting - if you aren't expected to have a check out, I'd walk away!
If you've amassed your great experience via the ATC/CCF - do not be surprised if civvy competition-style aeros suddenly seems like a totally new form of flight.
Love your enthusiasm!
Stik