I just noticed the forum moderator is in Seattle. Hello, from your neighbor Ken!
Looking at the analysis map and the desired stations it looks like I could use just the suggested UHF, Antennas Direct 91XG, and forget the VHF antenna. I plan to replace the fence rail mast with some genuine 18 gauge mast and guy wires - a 93 inch long array will need beefy support. (Why is mast steel so expensive? Does anyone know where to get it local and cheap?)
I plan to try it without a preamp first. I have a PCT MA-B1015-1A-VG pre-amp on hand (long story) and if it appears I need it I will also get a channel 13 inline trap to prevent swamping the TV tuners.
Thanks again for your help.
Ken