Is it too early for marriage [20M] [19F]

Hi my we known each other for 6 years plus we’ve been a couple for 5 years plus I got my degree last year and I’m working a lot earning a good amount too finance our lifestyles nothing Crazy. I don’t have any money saved up and we are still living at home she came to live with me because of school. She is still going to school for atleast 2 more years then she’s able to get a decently paying job so we are financially stable enough to move out. We are focusing on renting a place on my paycheck but the rent around our ears is expensive ass hell so we are not rushing.

So basically she asked me like when are you gonna marry me I tought she didn’t mean anything by it but she was serious so we sat down and talked a little about it but we didn’t really make the decision but came to a conclusion that we want to keep it small just parents for the official singing for the papers. I know that I want to marry her but I don’t know if it’s any beneficial? But I don’t know I just need some advice on what to do lol if you need more info just ask away I’m an open book.