Thinking about doing this 440 build at some point -- opinions needed

Pretty much what my motor is but i have a bigger cam and a smaller carb. I'd like to put a bigger carb on at some point. Guys here told me I'd be lucky to see 500hp. Who knows, i don't really care as long as it feels fast. I'll let ya know if a month or two what my seat of the pants dyno says.
Yeah take everything people on forums claim with a spoonful of salt.