Luke,
Welcome to the Pattern world,you`ve been bitten by the Pattern bug

,and i think there`s only one cure for this bite,that`s is to buy a light,long,beautiful and fatt looking Pattern Plane.
Anyway,a good pattern plane to star with is a Zen 90,if you want a 60 2 stroke,i have seen them fly with a YS60 and it has allot of power,there`s plenty of power for the Sportsman and Intermediate sequence.Or i have a friend known as Pro Pattern,he has one with a YS91FZ 4 stroke,and he`s very happy with it,and with the new YS110FZ in the nose,hang on to your hat.
You are in the UK,go to probuild UK and check if they have them.
I don`t know the website,but go to search and type in Pro Build UK you`ll find it.