My idea is that i use Roadster + 4x12 for dry signal and then slave from Roadster to the Rjm Rack gizmo where i have all of my effects hooked up and from there to the power amp and 2x12 cab. Is this a good way to make w/d rig. If not send suggestions how to do it properly. Also do i need some more gadgets (line mixer,attenuators, something for ground loop or phasing issues if that can happen). Also send suggestions for decent ss power amp that will drive 2x12. Nothing fancy but with enough power so one day maby i can run two 2x12 in real deal w/d/w setup.