Need some advice on some cylinder head gaskets

If it's at the design parameters of .012 under deck based on a 9.6 deck height and Edelbrock Magnum 58 cc chambers, the .093 gasket to drop it to 9-1/4:1. I don't know what head gaskets you've got, but if they're thicker than .035 you don't have any quench anyway if the pistons are at .012 below deck. I don't believe you'll have any problems with lack quench with the Edelbrock magnum chambers.