Full tower Lian li/ silverstone has to be the main choice in my books or if you want to go more original but way less practical an isotope case.
I can't lead you through the site as its flash but if you click on the right picture then the left picture on the next page which says collectione it gives you there designs or you can make your own design. If you went with a IX case you would have to watercool there isn't enough space internally to use a really good aircooled hsf.
You would be better waiting until you have all the money and paying in one large go for your "ultimate" pc as tach prices are constantly falling and the new becomes the old in the space of a few months. Not to mention shipping charges will take a large chunk of your change if your buying bits and pieces here and there. The psu and case are the main things that you can buy now if you want something sitting in the corner to smile at but the rest of the components will change a lot. Once you have built it expect to swap out your graphics card every 4-5 months if you want to stay top of the game without losing money, as you get a closer price to your original purchase my gfx card is 2 years old and when I bought it it was £250 but I picked one up for sli a couple of months ago at £60 (secondhand) which is a better model then the one I originally purchased.