I've hunted from many different style ground blinds. When gun hunting, it doesnt matter too much what kind. Plenty of room generally.
When bow hunting it is a different story. You need to have plenty of room. FWIW, i find the hub style blind of at least 60" is adequate. I don't consider the doghouse style blinds large enough IMO.
One more thing. Windows. Make sure your windows are low enough to shoot through without hitting the blind at the bottom of the window.
A common mistake is looking through your sight and seeing your target just fine not realizing that your arrow is taking off several inches below that.
I have a hole in my first blind to prove it. Fortunately, i did this during practice rather than while shooting at a deer.