Do you really need Vista Ultimate, buying Premium could save you a bit.
The only possible problem there might be is are you sure the memory is correct and is supported by the board? Personally I use Crucial for that as they guarantee it will work.
The CPU is supported by the board so thats no problem.
Having 2 DVD writers seems a bit overkill but I suppose its handy if one fails.
Apart from the memory issue, if there is one, it looks good.
I have to point out that the graphics card isn't all that good and if you play games you'd be better getting something better than a 8500.
For power supplies get a branded one and one with more power than you need.
Regarding cables it depends what the motherboard comes with. I tried downloading the manual from ECS but its very slow perhaps you could download it later and see. You will need 4 SATA cables if it only comes with 2 you will need to buy another 2, apart from that I don't think you would need anything else, unless I've overlooked something.