Ok so while I am swapping my motor out I am changing my belt and want to address the clutch because it is the original one.
I found packs at Energy one and Barnett including a new spring.
Is there anything else I need to look for while I am in the clutch pack?

 

When I changed engines at fewer miles than you the comp teeth were sharp, so I changed that and the primary chain. The clutch sprocket teeth were fine. I more recently fitted a set of Barnett kevlar plus-1 plates and found that the pressure plate was breaking up around the circlip, so check yours.