Reliable reception of the stations west and east of you will require a rotator or two antennas. Because you mentioned HTPC, I'm inclined to advise against a rotator. Instead, I'd suggest multiple tuners, each fed by fixed aim antennas.
A premium solution would be an
Antennas Direct C2V facing north connected to a
SiliconDust HDHR3 network attached tuner.
The East / West signals would call for a
Winegard YA1713 pointed toward 257° and an
Antennas Direct DB2e facing 79°. These two antennas would combine at a
UVSJ and then feed a second HDHR3. The YA1713 would to give you gain and directivity, both needed to overcome the lower signal level and multipath caused in part by the terrain between you and the KCPQ transmitter.
Unless you plan to split the signal to many sets, no amplifier should be used.