Hot 318, carb choices.

95% street?!?! 650 CFM

A speed demon is a copy of the Holley design. Unless it is that brand spanking new one. That is like a AVS/TQ hybred. IDK how that one is.

IMO, be it a Edelbrock or Holley, you have to be OK with the manufacturer/style of carb. But a 650cfm is what would work best for the street.

Just a side note, the exhaust is to small.