Straight answer, don’t go to Iceland if you don’t have to. I say the same to others regarding China, the ME or anywhere else that requires upheaval. If you have reservations from the offset then you’re destined to be unhappy.
Same as any other career in any other industry. If you’re not truely committed then it’s a chore.
If you’re a wannabe, then that’s different. You go where you’re given a break. We all did and made the necessary sacrifices. Again, pretty much the same as any other professional career. Aviation isn’t unique.