The sub and amp selection is pretty good. You always want your amp to be slightly more powerful than the sub, otherwise you risk clipping it. 150 watts more is safe in your setup.
I only have 2 complaints, and that's the head and the CCA amp wire.
I personally would get this Clarion. It's better than the kenwood and the RCA outputs are 5 volts instead of 2.5 volts. The higher the voltage, the less noise interference you get.
The other thing is that CCA is not as conductive as OFC. CCA is basically aluminum with copper strands. Aluminum is more resistant than copper, and electricity looks for the path of least resistance. If money is an issue, it may be better to get an 8awg OFC kit than 4awg CCA.
The difference is $30. I'd get OFC if I was you.