Mini ITX cooling loop

[ESKEW]

I had this hardware in a fractal node 202 and the thermal were choking the life out of it.  The hardware is an i7 7700, 16 gigs of ddr4, GTX1080, 1 Tb of nvme storage, and a 2 Tb ssd.  I know the set up is a bit outdated but I wasnt in the position to spend the money on a complete mobo, cpu, gpu and ram up grade so I figured I'd try to cool it better and get a bit of an overclock out of my gpu.  My cooling options in the 202 were next to nothing so my first piece I was going to shop for was a case.  I decided on the nzxt h210i.  Although it is on the large size it would provide me with full size atx psu fitment and a bit more room for a cooling solution.  At this point I started shopping for a psu and ended up purchasing a seasonic focus 750 watt.  

Now it was the fun part.  What was I going to cool with?  My main goal was to OC my GPU and with it being a founder's style blower card I didnt think any amount of airflow was going to allow me to do it.  So I started piecing a loop together..   turns out that gets pricey.  Then I found the ek a240g kit and ordered everything up.  

Fast forward 4 days and I'm building. Everything is going great and fitting well until i get to the tube routing. I needed to order a few 90 and 45 degree fittings to make sure there wouldn't be kinks in the line.  So I ordered them and waited a few more days.   

I'm happy with how it turned out and even happier with my thermal results. The cpu tops out at 61c and the GPU at 2150 mhz tops at 64c

Previously in the 202 the cpu was at 82 and the gpu was 90c  and would throttle back to 1633 mhz.

[ESKEW]

I plan on adding a 120 expansion kit to the rear and a drain.  Would putting a 90 with the drain valve off of one of the GPU's blocked ports be a safe idea?  Again this is my first water cooling build besides slapping an AIO on.

[For Science!]

26 minutes ago, ESKEW said:

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From a loop perspective It would make most sense to put the drain on the radiator port of the front 240 mm radiator. That way you can actually drain the system with the PC lying on its front panel so that you can open the reservoir.

[ESKEW]

10 minutes ago, For Science! said:

From a loop perspective It would make most sense to put the drain on the radiator port of the front 240 mm radiator. That way you can actually drain the system with the PC lying on its front panel so that you can open the reservoir.

If I was going to do that I would want to use the port closest to the mobo tray but there is literally no room and as vane as it sounds I feel like having it right at the glass would be an eye sore. 

[For Science!]

1 minute ago, ESKEW said:

 

Putting it on the GPU is "safe" but it won't be an effective drain. Could the drain not go towards and stay in the cable management compartment if its on the back port, then its hidden and also functional?

[ESKEW]

Just now, For Science! said:

Putting it on the GPU is "safe" but it won't be an effective drain. Could the drain not go towards and stay in the cable management compartment if its on the back port, then its hidden and also functional?

I could use a splitter to a 90..  actually that should work.  Thanks for the advice!