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What are the chances of this pulling in fox consistently?
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Zero. A higher gain preamp will net you nothing except a stronger signal of still poor quality.
The comparative noise figures for the two amps at channel 22 is nearly identical, within a tenth of a dB (2.9 to 3.0 dB), based on samples I've tested. There is no "extra noise" in one or the other.
KQFX is licensed as a low power station and is limited to 15 kW of transmit power giving it an estimated range of 40-45 miles, depending on the signal path. Expecting to receive it reliably (24/7/365) at 55+ miles in the absence of an ideal signal path is not realistic. It's on the same tower as KMIZ whose antenna is a bit higher on the tower and transmits at 120 kW as compared to 15 kW).
You could slightly improve the system noise margin by several dB by upgrading to a DB8e over the DB8 and switching to an ultra-low noise pre-amp like a Kitztech or Research Communications for UHF-only. You're near the point of diminishing returns and throwing such measures at the issue will likely yield very marginal improvement. The station might come in a bit sooner and stay a bit longer as the atmospheric conditions ebb and flow.
You could so get the antenna clear of any limbs as the mere near proximity tree's elements will tend to distort the antenna's reception pattern and performance.