Guys,
Although I probably wont be comin on this trip, a good plan is to get train to manor park station, walk into Belmont Park from Dry Creek entrance and then walk south to cornish street, and Catch the train back to Welly from Petone Station. Could also drive to either station, walk, and get train back to car. this allows for a one way trip with the added bonus of getting to see the Hutt by train. This is definitely one of New Zealand's premier train rides!!
Sights seen on the Walk include WWII Airstrip, and Belmont Trig with spectacular views of everything.