Storm and Mallow are going to be 7 years old this month. During that time they started off as house bunnies for about 2 years, then moved outside for about 3 years and then moved back inside. They first had to move outside because I was going to put my home on the market the following Spring and didn't want the bunnies inside when people were viewing, unfortunately, that mean't they had to go out the previous Summer so they became used to the temperature. I gave them a nice set up and they seemed happy. They also got free range time in the garden. As I had to buy a hutch, run, tunnel and toys they stayed outside when I moved house. Then my Dad looked after them one year in February when I was on holiday. While I was away he worried a fox might get them so he brought them in at night into his unheated conservatory. Then we had loads of snow so when I got back I didn't want to put them straight outside again. So, they moved back into the house and haven't moved out again!
It will depend whether Matilda and Grayson are happy to be outside. If they have a nice set up with lots of things to interest them, they may like it. The main problem I had with Storm and Mallow is that I didn't get so many opportunities to interact with them outside and it gets very cold and wet in winter so going outside to feed them and empty the litter tray isn't much fun when you are used to being able to do that in comfort. The other issue to consider is the cost. I bought a hutch plus a separate run, then I needed a hutch cover, I got some tunnels for free. It may be worth adding up how much it will cost you.
That's just my experience based on living with Storm and Mallow - many others on the forum have much greater experience then me