Erson cam

The heads that I am using already have the mods made to use the dual springs and I have to but springs anyways so if I need to go to a larger spring I can. He don't have the cam in stock and has to order it. He said that Erson will custom grind a cam for the same price it will just take a week longer to get it. Can you guys recommend a good set of grid specs? I want a good performance with a choppy sound. This car won't be driven more than 10 or 15 miles at a time. This is my first engine build and I am trying to do it on a budget but want to do it right.