My father in law has some air dried walnut slabs he's wanting to get rid of. They are around 8ft long width varies but think most is 11 to 15 inches wide and.2 1/2 inches to 3 inches thick. I've looked at prices but everything is is kiln dried and actually milled into actual boards. Would it be better to leave it in slabs or to cut it up 12/4 stock? It ha been drying for at least 3 years that I know of and I can find out the moisture content. He also willing to cut the slabs into 6/4 stock. Any input would be greatly appreciated. Thanks