Nice catch, GBrilliantQ. Yep, discovered that before I went to put it all together. Left the pic in the spirit of honesty and to show that this is quite a challenge for me.
Drained the system, shortened up my tubing, rinsed with deionized, hooked everything back up - ran for a while with deionized to further rinse. Then did a little experiment with Fluid XP+ Ultra Coolant. I know this isn't the preferred coolant by most, but I liked the color, and wanted to check it out.
It was very easy to bleed this time. Shook the radiator around a bit, did a few stops and starts and that's all it took. I knew the XP Fluid was more viscous (and not as efficient at heat transfer as H2O), but it as I said, it was also very easy to bleed. The pump is quiet as a mouse now, and I'm getting very little turbulence in the res. In fact, I'm worried that something isn't right - I know I'm getting flow, but can this pump handle this liquid? I dunno:
The res with the pump going: