I personally would not go to Wick unneccesarily either unless it was cheaper or he specifically wanted to go there for some reason, or it suited his weight and balance plans etc etc.
But the point is nobody had pointed out which of these is currently the cheapest, and it was not necessary insinuate that someone was daft for suggesting Wick as a potential refuelling venue, since the OP indicates his interest in Kirkwall as a possibility. Presumably he is going to be hopping about a bit and any help anyone can offer I'm sure will be welcome
Also if heading for Kirkwall, Wick will be his diversion.
So forget this handbags at dawn nonsense