Get ready for this uneeq, because from 2015-2019 Purim in Jerusalem & Shushan shall occur 4 out of 5 years running, on a Friday.
So go to an open city in Israel, but then remember you shall have to prolong Taanis Esther if observing Purim on the 14th, as then have to read Esther before eating, whereas in Jerusalem & Shushan, have 24 hours to eat between Taanis Esther & reading of Esther.
Even if go to B’nai B’raq as imaofthree suggests, there is an opinion that B’nai Beraq is a contigious town to Jaffa and may have to observe the 15th too.