Thanks for the reply brother. Thats a very good point about the Neutron, it didn't cross my mind to move it.. I use it in such a basic way there's almost no point in it being in the rack at all, I could even replace it with my Behringer 101.
I'm actually a little bit worried about the second rackbrute being horizontal. Ergonomically I'm not sure it will be great. If I ever get enough desk space two rack brutes side by side would be good.