Looks GREAT !
And yes, learn from us - a normal screen won't last a minute against a weasel or a raccoon - they will rip right in. Use hardware cloth .... and chickenwire is not for chickens .... I watched a fox chew right threw a section that was only a year old ! (I was right there - so swooped down on the fox once he munched out a few wires in seconds)
Mine have an open front all winter long with a deeper back - so how's that for not closed in ?Even in this hard and cold and long winter - no deaths and they are all plump and happy and can't wait to get out and start to free range - if the white ever leaves the ground.
Have we seen a pic?