Should we move in together?

Me and my Fiancée bought a house together before we got married because we were so sure of each other and everything is working out perfect. Her parents want us to get married right away through the court before we move in but I want a traditional wedding ceremony. Needless to say, the wedding day is 4 months away. She wants to respect her parents and get married before hand as that’s what they want because they are very Christian. I’m on the fence because I want to be respectful but I want to move into my own home that we bought together and still get married. Thoughts?