Croatia, Yugoslavia, and Romania will make it through the finals, deffinitely. Bulgaria has some minimal chances, so it is very possible that four Balkan teams will make it to the finals. May be Greece and Turkey can also go there (but it's too much dreaming for me to see all these teams at the finals).
There is only one thing about Croatia that troubles me. I have not seen enough talents from there, since I watched their chief teams Dinamo Zagreb and Hajduk Split (the last I watched alive) I must say I'm not very impressed. Though some of the older guys Maric, Simic, and Rukavina are still in shape.