Just chose the country you want to visit, The third language is not that hard as you thought. You'll be able to talk in the language in three month but not so awesome, after six or seven you language will reach the higher level now you'll be able to talk more. After a year you'll able to talk in the language the country you live.
I knew nothing when I'm here, nothing at alllllllllllllllllllll not a word!!!
But now I'm able to hang out with friends, have a simple conversation with fam, etc
The important thing is chose the country you want to, the language is one of the key to learn the cultures the coutry you visit. It doesn't matter if the country speaks in third language or not
Chose what you want and you'll be happy with the choice you have chose