Because you are looking into a blow through setup, make sure your carburetors can handle positive pressure. All sorts of weird things can happen when you start pressurizing the carburetor.
Think about this, with a fuel pressure of lets say 9psi, and a manifold pressure of 10psi, what will happen? Will the manifold pressure prevent more fuel from entering the float bowl? Will it prevent the float valve from opening all together? I don't know for sure, but these are the kind of things to think about when planning your project. If you were to lean out at 10psi, the result would not be pretty.
If you are using the triples for sure, I would forget about boost, and build a 3.1 with a lot of head work. There are people on HybridZ making over 250HP at the wheels with a similar set up right now.
Pete