Did you run fluid through the rear though? Rear suspension arms need jacking up or the wheels on the ground when bleeding them. The rear load valves have a linkage attached to the rear wishbones, you need to make sure the arms attached to the valves are not seized up.

Personally I would do away with the ABS. Mine has been removed with cossie 2wd front discs, escos calipers, braided hoses and well adjusted rear shoes and it stops really well.