Thanks so much for all the replies.
To answer a few questions, more general, we are not leaving Welli for good but will be hiding up in the mountains for most of the week and be in Welli the rest of the time. We are currently behind a 3g link in Te Horo and that works okish but something with a bit more grunt would be nice longer term.
I'll do some tests tomorrow on 3g reception on the different networks and ask around the neighbourhood what they do but chances are that they have no need for permanent internet as the places are rented out most of the time. If I can drum up a few neighbours it may be possible to get a more decent link in, happy to spend some money on it if it means I can get more than a couple mbit :)
Thanks again
cheers
Lenz