I have no real suggestions other than have fun. Enjoy your time. See the world on the cheap. Avoid Western Europe. I have never had any interest in Asia whatsoever so I have no comments about that. There is so much to see in Eastern Europe as to fill a lifetime and certainly a Spring and Summer of travel. I would advise against making any hasty decisions. You may find after a few months of travel that one place or another is very impractical for reasons that we cannot even predict right now.