Oh, so you bought valves separate? Why not have Hammer set them up for those valves? Are those 1.900" or 1.980" intake valves? Stock seats can support 1.900" but not 1.980", but intake and exhaust valve seats will both have to be sank a ton to run the 1.980"s. Without significant decking or similar work, the chamber volume will be huge.
Are you going to polish the headers? That would look nix IMO