You appear to have an easy shot at the major network affiliates as well as some 'extras'.
You'll do best if your antenna mounting location has a clear view of Queen Anne Hill and Capitol Hill. You no doubt see the three tall towers on top of QAH (KOMO, KING & KIRO) and a similar group of towers on CH (KCTS, KSTW & KZJO)... point the antenna to the NE (split the aim between QAH & CH).
The RCA ANT-751 is a great option, It's compact and can be mounted from the satellite dish 'J-pole' if that location has the view needed. Another very capable option is the C2-V by Antennas Direct.
http://www.amazon.com/RCA-ANT751R-Ou...words=ant-751r
http://www.antennasdirect.com/store/ClearStream-2V.html