You won't be surprised that the cache isn't at the published co-ordinates!
This is a bonus cache linked to six other local cheese caches - Blue, Pink, Yellow, Brown, Orange and Green. You will need to have found these before attempting 'The Big Cheese' bonus. If you've found them all and solved the given clues, congratulations, you're almost there! You should have six more numbers. Plug them into the following to determine the location of The Big Cheese:
5 1 4 ? ? ? ? ? ? ? ? ? ?
To paraphrase the immortal Eric Morecombe, you should have all the right numbers but not necessarily in the right order! In an effort to ensure that all six caches need to be found before any possibility exists of working out the final location, no help is offered other than the attached Geochecker. Sorry!
You are looking for a large camo box with room for swaps. It is in a fairly exposed location so please ensure it is well hidden on departure.
Congratulations to Zeusfaber for an impressively fast completion of the series and FTF here!