A four bay panel antenna, store bought or home built, is really not enough antenna to reliably chase down a weak signal like WDKY, real CH-31. A long Yagi like the 91XG or an 8-bay panel antenna with an ideal reflector such as the DB8E is a more appropriate choice. However, both of these antennas and their competing models from other vendors are going to be quite directional. As a result, you may find that you can't receive all the stations simultaneously from a single aim point.
But before I go into possible solutions, your report is flagged with:
WARNING: Address was only resolved approximately and might not be that close to your actual location. For more accurate results, try entering a specific address or coordinates. Please review these helpful threads:
http://forum.tvfool.com/showthread.php?t=4
http://forum.tvfool.com/showthread.php?t=14508
An accurate TVFool report may or may not differ significantly from the generic ZIP code based information you linked to initially.