Ignoring the merits or otherwise of Ice Station Zebra (EGPD), it's a bit much for people to complain about postings away from home. ATCOs are in mobile grades, get used to it! RAF controllers don't whinge about being posted away from home, and they get paid a pittance.
If this is the job you wish to do, it'll be the job you wish to do wherever you go and you should be damn grateful to have such a great career. Heck, Canadian tower controllers can end up in Yellowknife or in various inductrial sh*tholes around Ontario.
Back in Blighty, we had a trainee who was local and who didn't make the grade. Among his problems was a maturity issue, not helped by living in his parents' house and often driving their car to work. When chopped, he asked for a posting to the next closest NATS airport. The recommendation from his watch was "by all means give him another chance but only if he is made to leave home." When offered a posting 300 miles away, he actually asked for time to think about it. Most of us would have been thankful for the opportunity.
If you get through the testing, and if you get through the College or whatever they're calling these days, just be damn glad to get whatever posting you're given. If you want to be elsewhere, do a few years after validation then apply for a transfer.