Have you heard of Lennon the Bunny on YouTube? She has a lot of good videos that may be able to help convince your parents.
Did you mention how you'll be able to bond better with him and how it will cost you way less to keep him inside? Hutches cost a lot of money to make and take lots of time. If you keep him inside it will only cost you about $30 to get a playpen.
Did you know that's it's been proven that rabbits that live indoors in large enclosures (like playpens) are happier and healthier? They'll often much less stressed and are healthier since they have to space to exercise and explore with helps them both mentally and physically.
In my opinion, rabbits make better indoor let's than dogs or cats. They don't make much noise, they won't be able to do as much damage (especially if you bunny proof), they don't smell, and they don't take up much space.
I would try to show them how much better off he'll be as an indoor pet.