I like it, I would change a couple of things:
1) Use 1/2" barbs with that tubing for a ridiculously tight seal, no leaks here! You may even need to warm up the tube slightly to mold it over the barbs.
2) I would look at a Thermochill PA 120.3 Just my personal preference and I know from first hand experience that the PA series is very good, I would never use anything different.
swap the XT for an EK supreme HF, cools a bit better and costs less.
also change the tubing clips for metal worm clips, they hold better for a longer time
swap the XT for an EK supreme HF, cools a bit better and costs less.
also change the tubing clips for metal worm clips, they hold better for a longer time