I would definatley wait til I hear from HDW before making a commitment. I would be willing to bet he can get you all the parts alot cheaper than a repair shop will. As for the heads check out this guy
tay1792@bellsouth.net his name is Big Al and he does awesome work for budget prices. He used to wrench for Ray Everham of Winston Cup fame. Tell him ShakyJake sent ya. I am doing the same build only I am going with 95" vice 98 and since I bought all the parts myself it is gonna cost me about 3K and that is even paying CA labor prices. Just a thought.