Got an email from AH a few hours ago, i just thought i'd share.
Hi Alex
You are right with your figures but I hope we do have need to extend more than 16000 but that will be dependent on planning permission being obtained.
Anything is possible really, just look how Man Utd have extended their stadium.
Lets fill the 12000 first then get the additional 4000 seats in.
Regards
Alan