Is my run large enough for 3 barred rocks?

[kraftykrow]

The plan I had come up with isn't going to work with the shape of the coop. BUT I think I have a different idea that might be easier and safer for them. If it does work out it will add 100 square feet to the already 32 I have and I'll lots of room to make roasts and activities inside it AND it will be completely enclosed so no hawks can swoop in. I haven't spoken to my dad yet if it is possible to make it happen the way I think we can, but I sure hope so.