Looks right, I am considering one of these also, but my main concern is damaging it while I am stirring up the trub at the end of the boil. I use a 4 ft long stainless paddle, and it will beat the hell out of the strainer.
A good kettle screen should not require any whirlpooling or any stirring of the wort. That is, unless you just want to stir up your hops or just feel like you need to be stirring something. The bazooka screen is ok, but it won't do anything for pellet hops. Ask ORRELSE how he likes his Hop Stopper......