If you're going to spend all that money on a football-specific stadium, which is a great idea, why not put it where Newtown Park is? Wouldn't that be a more convenient central location.
In no respect is Newtown Park "central" to anything.
I would think Newtown Park would be substantially worse than Petone.
Westpac has the best location, but is not fit for purpose.
Petone is not that far from anywhere, yes seems a pain to catch two trains, but if timings are well arranged it would work perfectly. And the two train stations aren't actually that much further away than The Backbencher from Petone Rec. (I thought the location was poo, but after investigating the trains vs a Bus doing route and turning left a Ngauranga and other alternatives, you know what, the location works great)