While I haven't been in your exact situation, I have experienced a few aspects of it. Firstly, I've studied abroad (in Holland). Not in college, but when I was much younger (grade 7 to 11). The thing is, I'm incredibly grateful for the opportunity and think it was so worth it. And in a way, that whole experience was responsible for the second aspect I can relate with: having to push back nursing school by a year. I know it seems I was really young at the time, but the thing is, my last 3 years of high school were in completely different school systems (french, american/international, quebecois), which set me back in all the classes you need to have done in high school to get into nursing school here. The reason I didn't get in last year is because I didn't have my science and chemistry courses and I know that the reason is because I changed schools so much. If I had stayed in Canada those 4 years, I would have had those classes, no question. But I digress... The point is, I felt like I was wasting a whole year when I didn't get in. But in the end I have had great experiences (both related to nursing and not) and feel even more prepared to start this program full force, especially after my 6 month vacation in Cuba
(my parents live here now so I came to join them until July).
So my vote is go for the studying abroad. It'll be worth it. Maybe you could even volunteer at a hospital there and gain some experience while you're at it. And in the long run, one year really isn't that much time.
Good luck either way, I wish you nothing the best!