tryna get close to 400 hp...Wanna work out my 973 casting 318 heads

for the heads I'm thinking mill .03-.05... 1.88 valves (i think id loose way too much low end with anything bigger) and a home port match. The pistons KB167 flat tops..that should get me close to 9:1 compression no??

The cam I'm still not sure about. Something along these lines?? http://www.summitracing.com/parts/SUM-1798/

that should get me around 300+ with an RPM intake and headers ya think? Im trying to do more cam research but theres just allot that the cam effects. Kinda hard to keep up with