I wrote some of this in comments to someone's answer, but it should probably be an answer in itself.
In a way, I would say that you need to believe and live out what you think God wants from you, in front of Him alone, rather than worrying about what offends other people. This is a very important thing in all of our lives. But for a few reasons I'm not going to say that, here.
Firstly, it's beautiful that you want to avoid causing hurt to Jews by what you wear, even if only because of the long history of European persecution. Though people may say the offenders were not 'real Christians', it's still important to be sensitive of such trauma. Christian beliefs in themselves shout that what Jews have been holding onto all this time was a rebellion against God, or at least missing the point of what He wants, rather than a choice of love for Him and trust in Him despite so much cost. If that community holds a message from God in their generations, with their lives, their obedience to His Torah, and turning towards Him in His promise to them as a nation, then to preach the Christian messiah is to ignore the actual servant of God and to make them feel even more isolated in their obedience.
Also, I think that if Christianity is false in the areas where it differs from Judaism, and on the other hand Orthodox Judaism is holding some important and precious things... then Christianity actually defiles what is precious by taking Jewish symbols and using them to promote the worship of Jesus.
If Jesus was not actually God, then Christians think they are worshiping only God (that's their intention) but they are still bringing into that the worship of someone who is created, just like we are created. That is demoralising to us and a big problem; it's unintentional idolatry, if it isn't true. And how are Jews meant to test that sort of claim while carefully, carefully protecting the devotion to only ever worship our Creator? I don't believe that the Torah ever teaches Jews to watch out not to miss an incarnation claim or to try hard to interpret things so as to not miss their king. But it certainly gives a continual reminder to be cautious about wrongly believing or following such a claim. So actually, even though you must walk with God according to what He thinks rather than what I think, I can say that the Jewish community wouldn't endorse wearing such a thing and would feel that something important is being severely cheapened and defiled by it.
Sorry if it seems harsh... it isn't directed personally at you! I think it's beautiful that you asked, like I said, and it's also special to you in your family so I also think you fully have a right to that.