Actually--because whey does 'act' so fast I would limit it to right away in the am or PWO.
.8-1 gram of protein per pound of bodyweight is plenty for muscle synthesis for the VAST majority of people. Very few would need any more than that to promote muscle growth. If you choose to eat more because of a specific diet, that's fine. For body/muscle/structural needs, there is little evidence that supports any more protein intake.
The most important thing to remember is to include some type of protein source any time you eat.