Big Block vs Poly

The only reason to go with a Poly based build is because you do it either because you want a talking point, or you want to further the engineering and have the tools and talent to do so. If you watn a talking point, stick with simplicity and drop the power requriements. If you want the power, the goal will be a struggle to meet given the Poly parts market, and will not be a struggle at all given the B wedge parts market. All you have to do is make the choices as to what is important to you.