I don't think there is any noticeable difference for breezes. The main influence will be the ability to have cross flow ventilation, which means to have openable windows on the opposite so that breezes naturally flow through the house. A large opening on only one side (such as your stacker doors) isn't enough to get a breeze flowing through your home.

DuChateau Floors - Terra Collection in Zimbabwe / Horwitz Residence by Minarc · More Info

Best of luck,

Dr Retro

of Dr Retro House Calls

Do you need security screens, there are other ways to secure your home, it's a shame your doors are 2.4 they could have had some opening highlight windows above them. And agree to having other windows for cross ventilation.

I really dislike those security doors, it's sending two messages, they might put off any intruders but also signal potential buyers that there's a problem with the neighborhood.

We do have operable louvres above these stacker doors as we will have high ceilings. This could help drag the hot air up and out?

Hot air rises so as long as you have some cross ventilation you should be OK

Do you really need either? We have large stackers like this and chose no to ruin the view or the feel of the connection to the deck. Our previous house had ugly security screens everywhere, and we don't miss them at all. We live in Brisbane and the insects don't worry us.

If the doors open to a fenced yard you should only need screens not security unless you are in a bad area or want to leave them open when in bed Or out