Yup! should work for the M1. Even the Apogee Drive II would have been tough to get in the T1 or Ghost if you include the fittings. The Alphacool LT Solo still seems to be the best CPU/Pump Block option for cases with <70 mm clearance.
I have one of the Barrow pumps on order, so I'll let you know if it fits in the NCase with the side rad. I'm going to use the Koolance ultra low profile elbows, hopefully there's clearance. Going with a 28mm slim rad and 25mm fans.
Going with the AquaComputer Quadro (if I can fit it), although I might get a different temperature sensor like this:
For loop order, doing Rad-->CPU-->GPU-->DC-LT-->Rad, although I don't think the order matters TOO much. But i think this arrangement is going to be the easiest considering the...