Just to answer your other questions.
1) Amazon has shipped to Norway so I can't imagine it will not to Iceland. I had to use a mail forwarding service as shipping a Chromebook to Norway threatens US national security. One of my units died in transit and Amazon was great at replacing under warranty. So big shout out to Amazon on that front.
2) Following on from Osbourne's error many years ago no manufacturer tells you their product roadmap. Regardless of when or what you buy the risk is something better might emerge next week.
3) I agree with +Baldur Magnússon
there is no problem switching keyboards but the documentation is not great but the trick is you need to install it AND switch it on.
4) The suitability for school depends on your school and what you are studying. The biggest issue is the antiquated systems some schools use. Some still focus on only Windows and use downloads extensively in that case you have a problem. Other courses use specialist software which is just not simply not available eg. statistics in which case you have a problem.
I hope that helps.