Lift until the head port stalls and sometimes, even more, is good. IMO, a lot depends on purpose of the engine. While it isn't a "MUST DO", it is just taking avantage of the port flow. And since we are not worried about warrenties, leaving power on the table for our hot rods and race rides is something we don't like to do. Do we have to take advantage of it all? No. But I did pay for the heads abilty to make power!
Yes yes! Do this!