Planning a Roof Deck

This is the view looking north from the roof of our house.  The views in all directions are absolutely stunning.

So why don't we have a roof deck you are probably asking?  Well, we would eventually like to put a deck on the third floor roof.  However, even though I am planning (and dreaming) of the deck we first need to extend the third floor out, put a bathroom on the third floor and plan the access on to the roof deck before we can build the deck.  We would also need to remove the carpeting on the third floor and install new wood floors, replace the roof on the third floor, and figure out where and how to move the 100 pound air conditioning unit. 

The picture below shows the view from the third floor.  You can see the roof above Kiran's room.  We would like to  build a room and a small deck on this side.

The window to the left in the picture below (now without the bars) is the guest room.  We would like to extend the wall out to the edge and put a bathroom in the area that is to the left of this picture.

This is one of those things that we would eventually like to do but there are simply too many other things that need our immediate attention.  Once we finish the basement stairway and install shelving/organization units in the basement and renovate the first floor bathroom we will be ready to start on the third floor!

EDIT: I can't believe that I forgot to mention the small fact that this will be a dream for a while because renovating the third floor and building a deck is not in our budget for right now.  I guess the beauty of dreams is that they aren't grounded in reality.