Doors and accessories

The assignment for this month is "food and drink". This is not where I am busy with on the moment.
First I made a iron window bar. You never know, right?

The roof that's made will get partly windows. To define the correct format of the windows, I will first have to make to the doors. This to prevent too much dust comes in.

I want to make doors that can slide to go open and close.
Now there are questions like: Which type of door will I use? Is it possible to make these out of wood? Do I have enough window material in stock. And hinges?

Prototypes made out of cardboard. I do prefer the right one,
So lets start.
Krin