looking for 318 tips and advice

Build it like a 340 with a step less cam & valve size for the street and you’ll be fine.
The real question here is what do you want out of the car?
A certain power level? Time slip ET? Mileage master to travel with?
I like to think around 300hp at the wheel would be realistic but I might be dreaming a bit. Mainly just want a pretty quick summer car for now.