A 6-9 wgt rod is the practical range. The lighter rod may take longer to land the fish but it is adequate to the task if you have the time. However, sometimes the fish suffers exhaustion as a result. If you have a strong arm and want to fish the big wind days, bring the 11 wt. With rare exception, at least an intermediate line is called for.
Stripers like to feed near the bottom and getting the fly down is very important.
Crucial most days. In Pleasant Bay, where the wind averages 14 knots, a shooting head can be a day saver. Not only will your fly get down faster but you can drive a cast into the wind when you need to. Bring 3x to 6x sink rates depending on whether you plan to fish 8' of water up in the Bay or 20' down near the rock wall. Line one with the medium sinking and the other with at least a 3x shooting head.