Here is a coverage map for WQPX. You are on the extreme fringe:
I'm not certain where your property line is, but it looks like you might pick up one dB if the antenna is just east of the house instead of on the west side in the small plowed area.
Other things to consider are an antenna with more gain and a preamp with a lower noise figure.
If you go to separate antennas for UHF and VHF, it sometimes helps to tilt the front end of the UHF antenna up to catch the signals coming down from the mountain peak.