So I am buying the Samsung 830 128GB SSD but I am opting for buying it bare rather than with the desktop installation kit. My case comes with the 2.5" to 3.5" adapter and my Mobo comes with the Sata Cables and PSU comes with the Sata power cables so everything will be ready to go?
Sounds like it will be, assuming the 2.5" to 3.5" properly fits the drive which I don't know why it wouldn't other then the Samsung drive being a bit thin. The desktop kit also includes a copy of norton ghost which you should really do a clean install on an ssd anyway so you shouldn't need that.
Yes, you are ready to go. After you install Microsoft Windows use the Samsung SSD Magician utility to optimize your ssd and Windows. No muss! No fuss! No bother! If your ssd does not come with the SSD Magician on a cd you can download the latest version from the Samsung web site.