Hello- since I increased my flock from two to four, seamed a consensus that my coop was too small. So I found a crate, with a hinged door, so initially all I would need to do is add a door the chickens can access. Then add a real roof and attach run etc. later this spring and summer. my question is - the inside space for roosting is 3.5' x 4', with A 3.5'- 4' height clearance, which eventually could be increased with roof, and removing current ceiling, might gain another foot or so... is this large enough for 4 hens? No egg box inside- eventually I will attach one to outside of nest boxes, but for now, it would be separate.