I'm never opposed to more ventilation up high in winter but you should be fine with what you have. That's a lot more than many people have that do OK. It will not hurt anything if you do add more. I would not put a baffle on what you have. Depending in wind direction you might get rain or snow blowing in but the overhang should keep that manageable. Still, you will find out.
There is nothing wrong with having windows at roost height or below open in the hot summer. Winter is when it might be a problem. I think you will have plenty of ventilation with the windows closed but as usual more ventilation won't hurt.
Where is your run? Will water flow off the roof into the run? You might want a gutter and downspout.
How convenient is it for you to go from the coop to the run? I have a human door to enter the coop and another door to go straight into the run from the coop. That was convenient. But there was stuff in the way if I went from the coop front door to the run door. If yours are close that is not a big deal.
How convenient is it to open and close the pop doors? Looks like you may have two?
There is nothing wrong with having windows at roost height or below open in the hot summer. Winter is when it might be a problem. I think you will have plenty of ventilation with the windows closed but as usual more ventilation won't hurt.
Where is your run? Will water flow off the roof into the run? You might want a gutter and downspout.
How convenient is it for you to go from the coop to the run? I have a human door to enter the coop and another door to go straight into the run from the coop. That was convenient. But there was stuff in the way if I went from the coop front door to the run door. If yours are close that is not a big deal.
How convenient is it to open and close the pop doors? Looks like you may have two?