New build
 

I am repowering my 27 Velota and need tips. I have a bored 454/500 hp that I am putting a B&M 177 supercharger. What carb (holley 850?) would be best? Any guess on HP? Also I think I will need more pitch on my prop. I have a Bravo 1 with a 21p 3 blade prop now. Maybe a 25-27+p 4 blade would be a good starting point? This is my first attempt at a project like this and would appreciate any info. Thanks