Commitment Ceremony

So me and my fiancee have been engaged for almost 2 years now. We want to get married but as i recently learned if we do i would lose my medi-cal and ssi because they count his income as mine. The SSI isnt that much money so losing it wouldnt hurt to much but because of my disability i cant risk losing my health insurance. Without medi-cal my last surgery would have cost over half a million dollars. So after talking to my fiance about it he brought up a commitment ceremony. I know it isnt legally binding but in my opinion before government was created a marriage was about loving one another amd committing to that person, not about a piece of paper. When it comes to power of attorney he is mine and i am his already and everything we own we have together. My main reason for wanting this is that i have always dreamed of my wedding and having my dad walk me down the isle and celebrating with our family and friends. I would love a legal marraige if it was beneficial to us but it would really hurt me with my medical situation is the reason we cant. I just wanted to get other peoples opinions. We will call each other husband and wife but on invitations and everything it will say its a commitment ceremony. My family and friends know my situation so it will be clear what our reasons are. We are also not asking for gifts. We own our home and really dont need anything. What do you guys think?