Not a bad choice if you're short on space. However, have a look at Erogenous Tones' LEVIT8, which offers eight attenuators, with four invertable, plus DC offset, 2x gain, and it can also be configured as a 8-1 or dual 4-1 mixers, all in 10 hp. Super-flexible, very capable of being a central attenuator control and/or mixer for several paths at the same time. Something like that, where you have a lot of the same functionality in a single module, also helps to "future-proof" things a bit since it's enough of a module that expanding the build wouldn't pose as much of a problem for it as it might for the Cascade.