All looks good to me aswell, Ebuyer is a good site to buy from as ive had a few parts from them(all next day delivery) and they arrived the following day, and they have this parcel tracking thing where you can see when the goods have been loaded onto the van and when the van is on-route, its very clever. Only thing id want to say is the cordless desktop, i think thats keyboard AND mouse isnt it? if so can i suggest getting a wired keyboard because when i last tried a wireless keyboard on my pc it was rubbish for playing games, i took it back to the shop the next day and i carried on using my old keyboard.
Also id recommend a rechargeable mouse because you dont want to be replacing 2 batteries all the time, easier just to put the mouse on a charging cradle at night and then in the morning its fully charged and doesn't cost anything(thats what i do) although for £30(the cost of the wireless desktop) your not going to get a nice rechargeable mouse and a keyboard, maybe you can use your currant keyboard and then spend the £30 on a decent mouse? im a gamer and ive got a logitech mx1000 laser mouse(rechargeable) and ive just got an old Compaq keyboard, i can play games with it perfectly.