Ok, so you are going to go for the brand new Intel Sandy Bridge cpu series...an EXCELLENT choice!
I just read this review on that motherboard... http://benchmarkreviews.com/index.php?option=com_content&task=view&id=13626&Itemid=23
It seems to be a cost effective motherboard with the new P67 chipset.
You might want to get a copy of Maximum PC Magazine (I don't know if it is available in Britain), but the newest edition has a big article on the Sandy Bridge cpu's. These cpu's are so fast they even beat out Intel's i7-975 extreme edition cpu and as far as AMD is concerned, well, Intel has just done a big hit on them...things change fast in this business. http://www.maximumpc.com/article/features/sandy_bridge_washes_ashore
One thing I would caution you, and that is, on a brand new chipset and cpu combination, there are more times then not, unexepected errors or challenges with the BIOS. Since this is a brand new, yet to be released cpu, you may be faced with some BIOS problems...sometimes, the worst of the problems are incompatibility issues with RAM...so you must be careful to get really good RAM. Corsair Dominator is a good series of RAM to purchase. But you may have to flash the BIOS with the latest update if you run into stability errors. This is something I HATE and never look forward to, the possibility of having to flash the BIOS with an update fix because there is always the possibility of a flash failure and wiping out a completely new motherboard. I just thought I would caution you that newly released motherboards for new cpu classes usually have BIOS problems that need troubleshooting and I always hate to be the guinea pig...this is one of the reasons why I wait six months before I buy into new technology (the other reason being, that the prices drop on the parts).
I am not as familiar with the ANTEC 902, but ANTEC is really a very reputable company with excellent parts - I prefer the Antec 900 or 1200 case myself, but I will look into the 902 after writing this to see what it is all about. You have done GOOD to select an Antec Power supply. I question the need for a solid state hard disk when you could get a SATA 2T for half the cost or less. If you get the SSD disk, make sure you understand and know how to use the TRIM command or you will not get any benefit from the SSD drive. The only real benefit of SSD is that the boot time is reduced a little bit and executing programs is a little bit faster, but otherwise, its like having a mechanical drive. SSD drives are the exact same technology as flash memory, and this means, when the memory wears out on it, it will belly up on you suddenly and unexpectedly and it will be a DEAD drive you cannot recover data from...just be aware of this! BACK UP YOUR COMPUTER, to an external SATA drive so that when the SSD fails, you will be able to recover. Excellent choice for DVD player! Pioneer is my favorite and most recommended brand. Thermaltake is a good cooler.
On the whole, I think you have done a fine job of putting a first rate computer together! My only concern is that SSD drive... If it were me, I would get a 2T SATA drive (mainly because I love BIG volumes at cheap prices!).