Would a $50 125A Blue Sea power distribution bus work? It supports up to twelve circuits, each with its own fuse. Blue Sea also has an unfused 150A, 10 screw busbar as well. That can be used with a 150 amp ANL fuse to keep boom from happening if leads get shorted.
I know squashing a copper pipe is just fine for the job, but with electrical stuff, it is something that is best just done once, so might as well pay for the right items. Of course, If I needed something for clamping jumper cables onto, the flattened copper pipes are the best thing for that.