Hello, I know where I can get a used ampeg classic head for like under 700-800.. and I use a ampeg 4x10 cab (8 ohms) and if I got this head, I would add another one, and/or get 8x10 stack (way later though) would it be able to do the two 4x10s? and would it easily have enough power? or would it be peaking out a lot? My other choice is the B4R.. Please help!