You decide. Does GF stand for girlfriend or gluten free or grid filler?
The cache is not at the posted coordinates.
To find the final coordinates, fill in the missing digits:
N48 26.A W123 32.B
Use the information on the brown bordered title sign to calculate the missing digits:
A = ((number of letters top 3 lines plus one) times 13) minus one
B = A minus (number of letters in the last line divided by the number of letters in the third line)
Checksum = 16 + 13