Advice: Solid Roller or Hydraulic Roller for street car

If you have a very mild 318, I wouldn't worry about extracting every last horsepower from the cam selection. Aim for driveability and ease of maintenance. And for that, hydraulic roller is the way to go IMO.

Build the car for its use. Remove ego from wanting the biggest lift/duration cam unless the other parts (and use) support the goal.

A bad cam selection will make an otherwise great car into an absolute dog. I've been there. It's an expensive lesson.