if you want to get it all inside the case , bust open that Xoxide pump , that is a SysFX pump tank that was made for Xoxide , the pump inside , if i'm not mistaken , is a rio 180 ,
with a tiny bit of work this can be run entirely inline. with great performance , your radiator is huge and would adequately hold/ cool enough to keep your system down to a temp that doesn't require a res at all.. you could mount the pump outside of the drive cage opposite of where your tubing runs currently..
Great work btw , but i'd love to see it fully internal!!! --Josh