Oh, that is a good choice, you'll probably actually get better temperature results with the Thermalright, that is a bit beefier of a cooler. I was scared away by the potential noise of the big slim fan myself just because my machine is in our bedroom and needed to be near silent.
I'm not sure if my temps are going to be that informative, my FT03 mini has some pretty poor airflow and i'm running my fans with low noise adapters because of the whole bedroom thing. It breaks 80C in Aida64, but would certainly run cooler if I cranked up the cpu and case fans some more.