it is possible to relocate it all, and just use a key hidden to bypass it... the internet keys WILL work, however, like your family friend said, ford requires 2 good keys for programming, which is a reason i would recommend anyone who has a pats vehicle, with this style of programming, to keep 3 keys, incase one gets lost...
you CAN go to the dealership with 1 key, and a second and have them program it, though i don't know what they would charge for that...
the pats system on my truck (07 ranger) can learn up to 11 keys, i believe it is, and once that's full, you have to get the computer wiped and re-learn the keys you have... it also doesn't matter what 2 keys, out of the several you have, that you use to program the new key...
the pats system that is on my truck, learns to recognize the specific key, and does not program the key to be what the truck is looking for... though i have heard there is a way to "clone" a key, essentially, if you were to think about it this way, your key is an RF transmitter, and transmits on a specific frequency, all keys are on different frequencies, and the truck needs to know what specific frequencies to look for keys on... and by cloning a key, you would be making a second key transmit on the exact same frequency as one that already exists
of course they key it's self isn't an rf transmitter, as that would take a power source, that's just an analogy to help you understand how it works