The basic antenna performance of the HDX1000 is severely lacking in the VHF bands. You'll need VHF capability to see KCPQ, KCTS and KSTW.
For KOMO and KING, the weakest of your 'main networks' the UHF performance of the HDX1000 is marginal at best. I'd suggest a Winegard HD7696P.
http://www.antennacraft.net/pdfs/HDX1000.pdf
http://www.winegard.com/kbase/upload/HD7696P.pdf
The gain and beam-width of the HD7696P should allow you to aim at about 29° compass and be able to receive most of the signals on your report from the top down to and including the primary KIRO transmitter on real CH-39 on Queen Anne Hill in Seattle.
If you are going to use more than 25' of coax, or will be splitting to two or more tuners, you'll need to consider using a preamp such as the Antennas Direct CPA-19 or Winegard HDP-269.