The window dilemma..

So currently teabag has no windows. I know where I want the windows but I don't know what sort to get.
This is what I'm thinking:

Rear barn door windows

Slide door window

I was originally going to get a plain window here. However, as the stove is going to be right behind it, I want some ventilation. So rather than constantly having to cook with the slide door open, I'm thinking of getting a slide window here. 

Like this one but for the other side:

Rear panels

This is where I'm having the biggest dilemma. I just don't know what windows to have here. I've enquired about a few but I'm still unsure. I think I want them to open, for some ventilation.

There's a few types of windows out there but I have stumbled on these that could work. They look like they fill the whole panel and have a vent window at the top.

I'd put one each side, I think it would work. Although the passenger side one wouldn't actually be the whole panel windowed as the kitchen will be behind a bit of it. So the actually window inside the van would just be at the very rear.

Still contemplating, watch this space.