oh, we have similar reservoirs placement
i have windows from both sides, so that one res could be seen through the one and second through another.
don't u want to cut more from mobo tray? it seems u have several cm of unused space.

those acrylic res holders, my was broken very fast so my advice is to get reliable from black plastic.

where are temp sensors will be?

just interesting how do u plan to mount your pumps, it was a bit difficult for me to decide, but at the end i managed to place them so that just 2 bays were ocupied.

great setup in overall, and good pics quality