"It's time to get serious."

I have the same case, is there a good amount for a custom water loop, or should I just buy a full tower?

If you're asking if there's a good amount of space, I would say it's generally a pretty tight fit. I have a 480 radiator cooling that rig, but it's definitely an external radiator - and as a matter of fact, I'm going to be moving the reservoir out of the case as well. If you can, I would highly recommend a bigger case for a water-cooled system, but I got this case due to my space constraints. It works, but it definitely gets cramped in there, especially with a CPU + GPU loop.