Why do you need a filter and flow meter? And why would you use Aurora as a long term coolant when it is designed to be a very short term use product?
And why would you run a coolant when you should run plain distilled for the best performance?
You shouldn't need a flow meter for 2 reasons:
Hardware shuts down when it reaches specific thermal thresholds. It's designed to do this prior to reaching temps capable of damaging the hardware.
You can get free temp monitoring software that can shut your machine down based on a temperature reading threshold that you set...its really simple and better yet...it's free and doesn't restrict flow rates.
I'm betting this build is for someone who has never had watercooling so they want all the gadgets and coolants without knowing the downsides of them.