If you were starting from scratch... and reception of the signals from the stations on Queen Anne and Capitol Hill is the primary goal, A
Winegard HD7694P or it's larger variations up to and including the HD7698P would be useful in overcoming the hill just south and west of you. I'd expect the signal from KWPX-ION from W. Tiger Mt. to be strong enough that you would not need to be aimed directly at it... Electrons suggested aim point of 163° (Capitol Hill) is the right aim to try first.
KZJO, real CH-25 carries a copy of KCPQ-Fox on their second sub-channel, but it's data rate is limited to about half the rate broadcast on real CH-13 from Gold Mt. south of Bremerton. If you want KCPQ at full resolution, you could add a
Winegard YA1713 and insert the lone CH-13 signal using a
CH-13 Jointenna from Channel Master.
Having said all that, I'd start with adding a CPA-19... you can then decide if you need more antenna. Either way, the CPA-19 will provide gain to overcome cable and splitter losses.