Well, i think your laptop HDD will be a serious bottlekneck on your proposed system as they generaly perform worse than a full fat desktop HDD, also your new build will probably require a full re-installation of your OS, so you may aswell get a new HDD like the SAMSUNG F3 1TB drive, as long as you have your OS licence key then you will be ok to use your current OS on a new system, by the way what OS is it ?
I'm guessing you wanted 3 cd drives?, hard to tell with one long line of links. Anways you can just changed the one I have but I don't see why you would need 3, cds are becoming extinct. You won't need a heatsink as the stock one with this cpu is fine. And 500w is enough for up to a 6950/560.