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Thanks for posting all the information that we need for the pattern. My computer resolution is unfortunately not enough to make out the numbers for the shoulder shaping. Could you give us the numbers for your size please?
For the neckband, you're going to pick up sts around the neck with the beginning of round at the point of the V. That way when you dec at the beginning and end of round, you'll shape the V-neck so it'll lie flat and not bow out. I don't see numbers for the sts to be picked up on the right and left fronts so you're probably going to have to try that yourself. Picking up 3sts for every 4 rows is a good place to start but see what you think. You don't want the neckband to be too tight or too loose and rippley.