I don’t want to botch your plans but you gotta keep in mind that the educational systems in the EU and US are very different. Being a RN might not mean a lot abroad. I Germany there is however a lack of nurses and programs to recruit internationally. Maybe the situation is similar in other EU countries.
Where ever you are planing to go: Compare salaries cost of living, and what is publicly funded and what not. I think many people are turned off from moving because salaries are lower…
I’m not using dual boot anymore, but when I did, I always selected the partition from BIOS, which was totally fine for me. Are there arguments against it?