Ok I've been busy with tape measure trying to work out the off set's to order for the PAG's.
My current setup is:-
Image split rims
Front 8x15 ET -14mm
Rear 12x15 ET -26mm with 9mm spacers so -35mm
There seems to be some confusion regarding the Hawk Coffin Spokes ET measurements, but what I would say is that if a possitive ET was used on the front the wheel rim would run very close the top ball joint, with an ET 0 the clearance on my car using 4 stud hubs and Thema Turbo disks would only be 2-3mm to the ball joint cover and approx 6mm to the joint.
I don't know if the 5 stud conversion has a different hub face position to my set up, could someone with the coffins on measure the distance between the wheel rim and the top ball joint on a Hawk to confirm my findings.

