The final location is N 49 14.ABC W 123 06.DEF
A=At Cache #1 the first digit of the 10 digit phone number in the description.
B=At Cache #1 [in the hint] the number of letters in the word of the item you do not want to forget -1.
C=At Cache #2 The number of the Chapter where you will find the name Frank M.[new friend]
D=At Cache #2 The number of the Secret Instructions where the Black Gate is mentioned.
E=At Cache #2 Number of peoples names mentioned in the credits.
F-At Cache #1 Number of Video Clips you will get to see at this Cache.
DO THE MATH FIND THE CACHE

You can validate your puzzle solution with certitude.
LM