I've not lived abroad since I was 3 or 4 years old so I can't really give any good advice on that. My sister went abroad for uni. Initially she didn't want to go and found it very tough. By the end she didn't want to come back and stayed abroad for a number of years. Life is for living so if you want to try something plan it out and then do it. Don't fuck about wondering what if.
Regarding the yes/no thing.. I'd still say I'm undecided although definitely leaning towards yes. More heavily than ever in fact. Although my worry is that we're going to vote yes for the sake of it and not because it'll benefit us as a nation. As someone else said we won't know the answers to all the questions until we jump in at the deep end. And am I the only one that thinks about the battles that have been fought in this country's history and how hard people fought, bled and died to be independent only to be eventually thwarted time and again? In my opinion I really think we should give it a go.