Ok, I finally made a decision on triamping. This is the clearest image I could find on the topic(link below). I was curious about the "DC block" as well as any other thoughts and opinions. Initially, I have decided on Crown K1 for the woofer and 2 crown D75-a for the remainder. All run through DBX driverack PA and starting off with a melos Ma-333 with nos 6922.
http://www.rocketroberts.com/techart/multi_amp.htm The triamp config.