lol, the problem being; by the time postage is added to NZ, it's still about $30, so will probably just go down to Repco / Super Cheap / JB Hi-Fi or one of the other chains over here and pick up speakers, as for the amp, despite my best efforts, there are slim pickings from the local resellers (Jaycar & Surplustronics being the main contenders for anything like this) ... They have similar stuff, but for a higher price, and nothing that looks as well spec'd to me, so may just buy one off e-bay; found a seller who will include the 5amp adapter for better quality output too, including postage it's $47 USD from:
http://www.ebay.com/itm/290534659322?ssPageName=STRK:MEWAX:IT&_trksid=p3984.m1438.l2649 Seems to have good enough feedback, so unless I can find somewhere better with better postage before tomorrow (payday) then I'll get this one!!
Found a set of decent speakers too; but much as I have knowledge in this area; a second opinion can't help:
http://www.sony.co.nz/product/xs-gtf1027 obviously won't be buying them from Sony for that price, but have found them for $30 (NZD) which is the same as the ones you recommend work out to with postage to NZ; I can find cheaper, but not with the frequency response of the ones you've used, and obviously; you know the speakers well enough to say they're good enough for a cab... I reckon these should do it, and no postage involved anywhere, as JB Hi-Fi (a local chain) have them on special for $30 this week

That's the problem I've found living in NZ; in the UK / Europe / US, it's easy to get items as there's a large selection, and being relatively central in relation to postage terms, if you do have to order; then postage is cheap... Sadly; if there's a bright postage centre of the universe; New Zealand is the place it's furthest from

But, I live here because it is awesome, so I have to deal with the high postage if I want to do project work of any sort... Which realistically is fine

not many people even have their own cabs over here, which is one of the multitude of reasons I'm on here for ideas / help with things, and it means whatever I do will be reasonably unique even if I make generic cab x (which I'm trying not to) ... One of the companies I'm dealing with at present has even let me know I'm one of only 10 customers in the whole of NZ for the last year... Not that there's a huge population here, but even so, 10 is pretty low, and it's a well known company on here, but I was told that in what I would consider confidence as it was in an e-mail between myself and the company, so they shall remain nameless.