I have 2 Peavey Black Widows rated at 350W continuous and 700W peak, both running 8 Ohms. I am building these into a Cab with a horn. i'm thinking of making a power amp/preamp setup for the head. what is the highest-powered amp i should be looking to buy? also, is there a "best" way to wire the 3 drivers? (series/parallel) Thanks.