"OUT" on the VTF-3 disables the sub's crossover. Aside from that, I'd say just take the Outlaw guide and dive in. There's a good section on making the right connections as well as an example of doing a manual EQ. You'll also want to disable the low-pass crossover in the SMS-1 just like you've disabled the crossovers on your subs - the guide explains how in the section on the "System Settings" screen (starting on page 17).