The Kraken has the pump built into the waterblock and there is no reservoir. It's a cheap all in one CPU cooler. Not really reusable. It's meant to be disposable.
What you need is an open loop. A tower reservoir with built in D5 pump. D5 is a bit better than a DLC pump. Get a minimum of 240mm radiator. Preferably 360mm+. Thickness of the radiator can add to cooling capacity as well. Get a water block for the CPU. Compression connectors to go all around, and some piping. Run it all in the right direction and fill it up. Oh yeah you need 2 or 3 fans for the radiator. EKWB will have everything you need except the fans. EKWB is probably also the best quality on the market with the best selection.