Welcome to TF, you brainy fellow medic. I think the silence re boat suggestions is because your experience already makes it a bit daunting for us to advise you, as it might be a bit like trying to tell granny how to suck eggs. However, I'm sure some will be forthcoming re recommendations about boat choice once they've had time to digest your post, and mull it over a bit. For mine, you couldn't go far wrong looking at Nordys and Selenes, and maybe also Grand Banks. It sounds like your budget might be up to that..?