New map.
http://zoom.it/wKru
Tell me if you don't like the borders/names I added/changed.
Looks good to me, also it loads a heck of alot faster.
Anyways, I did some quick calculation and while I probably won't need as much, looks like 33 stacks will cover it nicely. For the southbound part, it looks like I'll need glass for all four sides for much, if not all, of the underwater portion and for the westward section thats underwater, a good sized section will just have a glass roof, but not sure how much of it will have three sides or four sides covered.
Edit: Forgot about the total length of the westward section that will probably be underwater. According to the the maximum calculations, I'll need a bit over a large chest worth, but since I calculated the maximum (don't know the actual amount needed and I fudged it by overcalculating a little, so I'm actually extrapolating here), a large chest full of glass should cover it.