although where they are going to get the ATCOs from I don't know.
Although many would consider Inverness to be in a remote part of the country, it has a lot to recommend it. If Marshalls (or anybody else) has got the contract, I reckon they wouldn't have too much of a problem filling the posts if they paid a reasonable amount, say NATS band 2 equivalent.
There are probably several NATS controllers (including one or two at ABZ) who would consider taking early retirement and moving to the Moray coast to enjoy the good-life.