Chances are if your alter bochur son is 19 years old and wants to get married now, you should seek professional help. No one should start shidduchim after 18.
due to the fact that it is assur gammur to have a medina lfi the gemara in kesubos, the mitzvah of yishuv eretz yisroel no longer exists and it is completely assur to have anything to do with it.