Is this enough space for my Lionheads?

I have two Lionheads, a female and a male. Neither are fixed but I am saving up to get them done. The female will be 10 weeks old next week.

They have a weatherproof hutch in the garage, which we never park our car in and it's heated. So no gas fumes. They share a large hutch that is split down the center so they can't get to each other. Each side of the hutch is 24" x 30" which is around 5 square feet. They are both water bottle trained. My male, who is almost 3 years old, gets fed 1/4 cup of food every morning and has unlimited Timothy hay. My girl is currently on free feed since she is still so young. My male gets plenty of veggies and so will my girl as soon as she is old enough to handle them.

On top of that as their cage, we have a large outdoor playpen that has a wire top and is sunk into the ground so they cannot burrow out or jump over. Each pen measures about 60" x 30" (not sure what that is in square feet). They play out there almost every day for 4-6 hours, depending on weather conditions. If they don't get to go out, they hop around the garage (one at a time, so they have no contact) for awhile supervised.

Does it sound link in providing them with a good life? I try my best to do so, and if there's something that could use improving please, let me know!

(Note, the photo of her is old. I haven't gotten around to taking new ones yet)