The 7694 should work. The worrisome part is the path from WGGB - 2-edge. Having to bend over an obstruction twice adds a lot of randomness, but the predicted NM is still in the 20s. The 7694's gain (about 12 dBi at ch. 40) should be enough to protect against pertubations without having to get a preamp. The next step up adds at least 20 dollars and maybe 2 dB - not worth it.
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