Wedding after elopement

Hey everyone! So I got engaged this past Christmas. We've been planning our big wedding for October 2021 (for financial reasons, it can't be sooner). However, I ended up getting pregnant and so now we want to legally get married. Our plan is to get married legally at the end of this month, by eloping, but everyone knows what we're doing. But we still want to have our big wedding next year October because we both come from big families and want our families to be there celebrating our marriage. Like, we don't only want a reception then but we want a "ceremony" too with groomsmen and bridesmaids and the whole shabang, so we can include all our family and friends in this special time of ours! However, I don't know the etiquette... Is that okay to do? Will people think that's stupid? I think that day will be just as special as the day we actually get married, especially because we will be able to celebrate with our family and friends! I just don't know how other people will feel about it.