A Photo Is Worth A Thousand Words Multi-Cache

I really don't want this to be hard to find.  But you do need to calculate the fnal coordinates using the below puzzle.  So here is a blatant hint at the final location...look on the bottom of the old corner fence post.

The cache is not at the posted coordinates!  Follow the instructions below to find the coordinates of the final cache. 

You will see a sign at these first coordinates.  Yes there is math invovled in figuring this one out...lol. 

Using the FIRST & LAST words on the sign use the following instructions to determine the final cache coordinates:

N42 (1^st + 2^nd   letter)  (3^rd + 4^th letter)  .  (5^th + 6^th letter)  (7^th + 8^th letter)  (9^th + 10^th letter)         

W79 (11^th + 12^th letter)  (13^th + 14^th letter)  .  (15^th letter)  (16^th - 17^th letter) (18^th - 19^th letter)

Input the numbers you calculate into standard way point coordinates format.

N42 _  _  .  _  _  _   W79 _  _  .  _  _  _

Below are the numerical value of each letter in the alphabet.  Use these to calculate the numbers needed for the final cache coordinates:

0 = B, G

1 = P, I, C, A

2 = T, N, E

3 = O, F, J

4 = D, W

5 = K, M

6 = Q, U, Y

7 = S, H

8 = L, V, R

9 = X, Z

This cache is a container large enougn for small swag to trade or trackables and there is an FTF prize.  I will try and keep it stocked with something special and unique to add to your collection. Plus, if you are willing, I would love a private message with a photo of yourself at the final GZ when you find it ...but only if you wish to do this!  :)  Oh and I added in a Letterboxing Stamp for those that wish to add to their stamp books.  Please leave ths stamp...it is not a trade item. 

Congrats to carnigrewel on the FTF!