All well and good, but I think you'll find that if you remove the Neutron from the cab (especially since the Neutron already HAS a cab and power!), you'll get closer to a better result because you won't be trying to build around that "lump" that, tbh, shouldn't be in the Eurorack case to start with. It's an expensive luxury to do that, because it adds the cost of the occupied rack spaces to your Neutron. Very impractical.
Also, with that Neutron in there robbing space, you'll miss out on some of the better noise modules out right now...for example, have a look at the various sonic atrocities made by Schlappi Engineering. They're right up your alley...but as a rule, they're sizable as well, so if you want to implement some of them, you WILL need the extra space.