Wombat13 :
FF, at the risk of taking your thread off at a tangent (wouldn't be the first time.......), are you actually planning to fly this route? If so, in what?
Not sure how my answers can help you ? If you don't think you can do it, then does it matter what anyone else does? Stretching your envelope is one thing, but if you're not comfortable, then in most light aircraft it's a long time to sit feeling the buttons disappear off the seat !
However, for what it's worth, yes, I'm looking at a trip to Denmark in my 210. I've taken SEPs across the North Sea several times, but never through these particular zones, hence the questions ...
FF