Thanks Pete, Dan and Andy. Plenty to mull over.
I think I do need to get the guiding sorted and work from there. I'm assuming the guiding won't be a problem if we come up with the appropriate rates, although until i look into it further I have no idea what they are. Might get back to you on that one Dan.
It would be useful to have some advice re the guiding from those who know so hopefully that info will be forthcoming. Plenty of time to plan, and as I'm away again in August on an non wildlife related trip I'm not seriously researching until I get back. Must admit I know very little about Iceland apart from it 'looks good' and I've wanted to visit for many years after having seen a fictional serious on TV filmed there. Thanks again.